BARBARA: There's been a forest fire. Everything's sort of white and ashen.
IAN: Funny mist.
DOCTOR: The heat must have been indescribable. Look at this soil here. Look at it. It's all turn to sand and ashes. Extraordinary. How can shrubs or trees grow in soil like that, hmm?
IAN: Something else that's strange. There's quite a breeze blowing.
SUSAN: Well?
IAN: Well, look at the branches and things.
SUSAN: They don't seem to be moving.
BARBARA: They're absolutely still.
(Ian touches a twig, and it breaks easily)
DOCTOR [OC]: Extraordinary.
BARBARA [OC]: We're not on Earth any more.
DOCTOR [OC]: No, certainly not.
IAN: Huh. Like stone, look. Very brittle stone. It crumbles when you touch it. Look.
DOCTOR: It's petrified. How fascinating, a petrified jungle. Hmm. Couldn't have been heat, then, and age would merely decay.
SUSAN: What could have caused it, Grandfather?
DOCTOR: I don't know, I don't know, but I intend to find out.
SUSAN: Well I'm coming too.
(The Doctor and Susan go exploring)
BARBARA: Ian, where are we?
IAN: I don't know.
BARBARA: Well why doesn't he take us back?
IAN: I'm not sure that he can.
BARBARA: What, ever?
(Further on, Susan has made a discovery.)
SUSAN: Oh Grandfather, look! It's a flower. A perfect flower. Well, it's even kept some of its colour.
DOCTOR: Yes, very pretty, very pretty.
IAN [OC]: Doctor, over here!
DOCTOR: What is it, Chesterton?
(From the edge of the petrified jungle they can see across a plain to a city.)
DOCTOR: Most fascinating.
BARBARA: A city, a huge city.
(The Doctor puts on a pair of binocular glasses.)
IAN: Well, Doctor? Can you see anything? Any sign of life?
DOCTOR: No, no, no sign of life. No, just buildings. Magnificent buildings, I...
SUSAN: Oh, let me have a look. It's fabulous.
DOCTOR: Whatever it was destroyed the vegetation here certainly hasn't damaged the city. But there's no sign of life. No movement, no light, no... No, I shall know more about it when I've been down there.
BARBARA: Down there? Oh, no. We're going back to the ship.
DOCTOR: Now, don't be ridiculous. That city down there is a magnificent subject for study, and I don't intend to leave here until I've thoroughly investigated it.
IAN: Well, it's too late to talk about it now. It's getting dark. We'll discuss it when we get back to the ship.

[Tardis]

(Susan it putting drops into a glass of water. Barbara is holding her head.)
DOCTOR: Oh, what's the matter?
BARBARA: Oh, I've suddenly got this terrible headache.
DOCTOR: Oh, dear, dear, how irksome for you. Oh, this stuff is very good. This should cure it. Now, not too much, dear.
(The radiation meter is in the danger zone and bleeping.)
SUSAN: Here, try this.
BARBARA: Oh, that's very nice.
IAN: Let's hope it does you some good.
DOCTOR: Susan, would you like something to eat?
SUSAN: No thanks, I'm not hungry.
DOCTOR: Oh child, that's unusual.
SUSAN: I think I'll go to bed now, anyway.
DOCTOR: Right.
SUSAN: Do you want to know where you can sleep, Miss Wright?
BARBARA: Oh, yes.
(They hear a tapping sound.)
IAN: What's that?
DOCTOR: The scanner.
(The scanner just shows the trees.)
IAN: Nothing. Not a thing.
SUSAN: But something must have made that noise.
BARBARA: Look, I've had enough of this. Please, can't we get out of here?
DOCTOR: Ah, but the city. I must see the city.
BARBARA: But why?
DOCTOR: I will not be questioned. Uninvited passengers. I didn't invite them to the ship. I shall do what I want to do.
IAN: Why endanger the rest of us by staying here?
SUSAN: Grandfather, please. Please.
(So the Doctor sets the Tardis going, and ducks under the console to remove something.)
BARBARA: Stone trees are all very well, but the next forest I walk through I want them all to be made of wood.
(The Tardis starts shaking and the Cloister bell tolls.)
SUSAN: What's the matter?
DOCTOR: I don't know. The power take-up was rising normally and...
IAN: What's wrong?
DOCTOR: Oh, don't distract me, please.
SUSAN: Shall I trace it on the fault locator, Grandfather?
DOCTOR: Yes, I think you'd better, child.
SUSAN: (checking a printout) K7.
DOCTOR: K7? Ah, yes, of course, the fluid link. Yes, yes, yes. Yes.
(Goes under the console and comes up with the part he took off earlier.)
DOCTOR: Yes, there we are, you see. The end of it's unscrewed itself and the fluid has run out.
IAN: Have you got a spare?
DOCTOR: Oh, no, no need for that. This is easily repaired. All we have to do is refill it.
IAN: What liquid do you need?
DOCTOR: Mercury.
IAN: Mercury. Can I get it for you?
DOCTOR: No, I'm afraid you can't. We haven't any at all.
IAN: What?
DOCTOR: No.
IAN: Don't you carry a supply?
DOCTOR: No, it hasn't been necessary. This hasn't happened before.
IAN: But you must have some somewhere, surely?
DOCTOR: No, no. We shall have to get some from outside.
BARBARA: But where? There isn't anything outside but th e...
IAN: Yes. There's the city.
DOCTOR: Yes, the city, of course. Of course we're bound to get some mercury there. Yes, we're bound to. Well, I mean, what else can we do, hmm?
IAN: It seems we have no alternative. We have to go to the city.
DOCTOR: Yes, indeed. At first light, then?

[Jungle]

IAN: Well, shall I lead?
DOCTOR: Yes, by all means.
IAN: Look.
(There's a small curved metal object on the ground.)
BARBARA: Don't touch it, it might go off.
SUSAN: Be careful.
DOCTOR: What is it, Chesterton?
IAN: I don't know. Stand back, all of you.
(He prods it with a long stick which miraculously doesn't disintegrate, then taps it. It sounds hollow.)
IAN: I think it's all right. A metal box. It's a box of glass phials. Look.
DOCTOR: Let me see.
SUSAN: Then there was somebody here last night. They must have dropped them.
DOCTOR: Yes, I'd like to run a few tests on those. Susan, would you take these into the ship, please?
SUSAN: Yes.
DOCTOR: Thank you. Oh, and by the way, did you remember the food supplies?
SUSAN: Yes. A day's supply for four. That's enough, isn't it?
DOCTOR: Yes, ample, ample.
IAN: I trust we won't be more than a couple of hours. You ready, Susan?
SUSAN: Yes.
IAN: Come on, then. Off we go.

[City]

(A very metallic, angular place.)
DOCTOR: Do you mind if I sit down for a minute? I feel a bit exhausted.
IAN: You all right?
DOCTOR: Yes, I'm just a bit tired. It was a long journey and my legs are rather weak.
BARBARA: Why don't you rest here? Ian and I will look around and see if we can...
DOCTOR: No, no, no, no, I want to look around too. I shall be all right, thank you.
IAN: I must say, I don't feel too good myself. Look, why don't we get this over with quickly. Look for instruments, gauges, anything like that. Ideally what we want is a laboratory.
(A door opens.)
BARBARA: Ian, look.
IAN: Why don't we separate and go different ways and meet back here in say, ten minutes. All right?
BARBARA: Fine. I'll go this way. (through the door)
DOCTOR: Lend me your arm, would you, Susan? Thank you.
(Ian finds the sensor to open another door - it's the round things by the side of them.
(On her travels, Barbara has to duck in the odd-shaped corridor, and she is watched by a remote camera.)
SUSAN: Let's try this one. (the door opens for her) There's no light.
(Barbara gets shut in by bulkheads closing behind her, but she only notices when she tries to retrace her steps. Eventually a bulkhead opens and she is confronted by a vicious looking sink-plunger being waved by something. She screams.)
IAN: Ah, there you are. Any luck?
SUSAN: No. How about you?
IAN: No, no luck. Barbara should be here by now. Barbara! Barbara! We'll give her a couple of minutes more, and then if she's not back we'll have to go and look for her.
(Barbara is finally trapped and disappears.)
IAN: We've waited long enough for her. We must go and find her.
(In another level of the city, Barbara leaves the elevator, and is confronted by a vicious looking sink-plunger being waved by something. She screams. The others return to the starting point.)
IAN: Barbara?
(They go through a door.)

[Room]

IAN: We ought to find some mercury here.
DOCTOR: Measuring equipment. But measuring what? Look here. Look at this drum. The ink's still quite wet.
IAN: Yes. Hard to imagine what sort of people these are.
DOCTOR: They're intelligent, anyway. Very intelligent.
IAN: Yes, but how do they use their intelligence? What form does it take?
DOCTOR: Oh, as if that matters.
SUSAN: The thing that's ticking. It's over here. It's a Geiger counter.
IAN: But look at the needle! It's past the danger point.
DOCTOR: Yes, yes, that explains a lot of things, doesn't it. A jungle turned to stone, the barren soil and the fact that we're not feeling well.
IAN: Radiation sickness?
DOCTOR: Yes, I'm afraid so. The atmosphere here is polluted with a very high level of fallout, and we've been walking around in it completely unprotected.
IAN: What? But how do you explain the buildings? They're intact.
DOCTOR: A neutron bomb. Yes. It destroys all human tissues, but leaves the buildings and machinery intact. Yes.
IAN: How much radiation, and how badly?
DOCTOR: We need, we need drugs to be treated.
IAN: But where are we going to find them?
SUSAN: The Tardis will have to take us to another time and place where we can be cured.
IAN: But don't you remember? We can't move the ship until we find the mercury for the fluid link!
DOCTOR: For the fluid link, yes. Yes, I'm afraid I cheated a little on that. I was determined to see the city, but everybody wanted to go on and, well, to avoid arguments... In short, there's nothing wrong with the fluid link.
SUSAN: What? Grandfather, do you mean to say that you risked leaving the ship just to see this place?
IAN: You fool. You old fool!
DOCTOR: Abuse me as much as you like, Chesterton. The point is we need an immediate return to the ship, and I suggest we leave at once.
IAN: We're not leaving until we've found Barbara.
DOCTOR: Very well. You may stay and search for her if you wish, but Susan and I are going back to the ship. Now, come along, child.
IAN: All right, carry on, fine. How far do you think you'll get without this?
(The fluid link.)
DOCTOR: Give that to me.
IAN: Not until we've found Barbara.
DOCTOR: Give it to me, I say.
IAN: No! It's time you faced up to your responsibilities. You got us here. Now I'm going to make sure that you get us back.
DOCTOR: Chesterton, this is...
IAN: We're wasting time. We should be looking for Barbara.
SUSAN: He's right, Grandfather. We are wasting time.
DOCTOR: Child, if only you'd think as an adult sometimes. Oh, very well. Let's go then. Let's go.

[City]

(They walk out of the room to be met by a group of sink plungers wielded by evil four foot tall pepper pots.)
DALEK: Stay where you are. You will move ahead of us and follow my directions. This way. Immediately.
(Susan and the Doctor obey, but Ian hesitates.)
DALEK: I said immediately!
(Ian runs down another corridor.)
DALEK: Fire!
(A ray hits Ian, he turns from positive black and white to negative white and black, then collapses.)
IAN: My legs! My legs!
(Susan runs back to help.)
DALEK: Stop! Your legs are paralysed. You will recover shortly unless you force us to use our weapons again. In that case, the condition will be permanent. You two, help him.
(Susan and the Doctor help Ian up.)
IAN: My legs, my legs. I can't use my legs.

[Detention cell]

DALEK [OC]: Stop here.
(The door opens and Ian is carried in by Susan and the Doctor.)
BARBARA: Susan!
SUSAN: Miss Wright!
IAN: Barbara, thank heaven we've found you. Are you all right?
BARBARA: Yes. What's the matter? What's happened?
IAN: Oh, I'm all right.
SUSAN: He tried to get away and they hurt him.
BARBARA: Can't you stand up?
IAN: Not without help. The feeling's coming back, don't worry.
BARBARA: Come over here.
IAN: How about you, Barbara? We tried to look for you and then those machines caught us.
BARBARA: They trapped me in some sort of lift. It seemed to go down for ages.
IAN: They didn't hurt you?
BARBARA: No. Ian, what are they?
IAN: I don't know.
BARBARA: I tried to think of how I could get away from them, but then I began to feel so weak and giddy. It's getting worse now. I think they must have drugged me in some way.
IAN: It's not that. Barbara, we've got radiation sickness. All of us. The Doctor's pretty badly hit.
BARBARA: Well, what's going to happen to us?
DOCTOR: Well, unless, unless we get treatment, we shall die.

[Control room]

(The prisoners are being watched on a monitor.)
DALEK 1: Our prisoners are showing preliminary stages of sickness already.
DALEK 2: We know the Thals are able to live on the surface.
DALEK 1: And that they must have found immunity.
DALEK 2: Perhaps it is a drug. Is it failing them now? Why are these four showing signs of radiation sickness?
DALEK 1: A few questions will reduce the mystery. Bring in the old man Thal prisoner.
(The Doctor staggers in.)
DALEK 1: Do not move out of the light. Sit on the floor.
DALEK 2: You are one of the Thal people?
DOCTOR: I don't understand you.
DALEK 1: Why are you suffering from radiation?
DOCTOR: Why? Because we were not aware of it until it was too late, that's why.
DALEK 2: No, that is not true. We know the Thals have existed outside our city.
DALEK 1: The truth is your supply of drugs has failed, and you came into the city to see if you could find more.
DOCTOR: No, no. Thals? What are you talking about? We're not Thals, or whatever you may call them. Can't you see we're very ill.
DALEK 1: You and your companions need a drug to stay alive.
DOCTOR: We have no drugs. (softly) A drug? A drug. The drugs left outside the Tardis.
DALEK 2: Tardis? He is becoming delirious. I do not understand his words.
DOCTOR: Listen to me.
DALEK 1: Stay in the light.
DOCTOR: My friends and I are travellers. We did find something in the forest near our encampment. They may be the drugs you're referring to. Why not let one of us go and bring the phials here? Under guard, if necessary.
DALEK 1: We cannot move outside the city.
DOCTOR: Very well, then. Let one of us go and hold the others until he returns.
DALEK 1: Providing whoever you send understands the rest of you will be held responsible for his return.
DOCTOR: He will have our lives in his hands. That is enough.
DALEK 1: Then we agree.
DOCTOR: Tell me something about the people, the Thals.
DALEK 1: Over five hundred years ago there were two races on this planet. We, the Daleks, and the Thals. After the neutronic war, our Kaled forefathers retired into the city, protected by our machines.
DOCTOR: And the Thals?
DALEK 1: Most of them perished in the war, but we know that there are survivors. They must be disgustingly mutated, but the fact that they have survived tells us they must have a drug that preserves the life force.
DOCTOR: And knowing that these mutated creatures exist outside the city, you're willing to send one of us in amongst them?
DALEK 1: As you say yourself, all your lives depend on it.

[Detention cell]

(Susan and Barbara are helping Ian walk around. Only one leg is currently working.)
BARBARA: Is it any easier?
IAN: Yes, I think it is. I'm going to try and stand on my own.
SUSAN: Be careful.
IAN: I'll be all right. Oh, that's not too bad, is it?
BARBARA: Why don't you sit down for a minute?
IAN: No, no, no. I'll be all right.
(He tries to walk, and falls.)
IAN: No good.
BARBARA: Come on, sit down. It'll wear off in time.
(The Doctor enters.)
SUSAN: Grandfather!
IAN: Are you all right?
SUSAN: What happened?
DOCTOR: In a moment, child. The phial of drugs left outside the Tardis, remember?
BARBARA: Yes, what about them?
DOCTOR: It's possible that they may have been anti-radiation drugs. I can't be certain, but it does give us a chance. The people here, whoever they may be, are very eager to get hold of them.
IAN: None of us are in very good shape to go and get them.
BARBARA: Oh, I could do it.
IAN: No, it must be me.
BARBARA: But you can't walk.
IAN: Oh, I'll be all right in a couple of hours.
DOCTOR: Whoever goes must be very careful. As far as I can ascertain, the creatures out there are the ones who dropped the box. They're called Thals. They're mutations.
IAN: So it wasn't our captors who left the drugs behind?
DOCTOR: No. If they were drugs. I've learnt quite a lot from the Daleks.
IAN: The who?
DOCTOR: The Daleks, our captors here. Oh, if I didn't feel so... Oh. But I was right about the neutron bomb. The Daleks built this underground city as a kind of huge shelter.
IAN: But what about the, what do you call them, the Thals? I mean, how did they survive out there? They...
DOCTOR: I don't know.
IAN: Doctor. Doctor? I must get that drug quickly.
SUSAN: He's burning hot.
IAN: Yes. As soon as they take me to the surface, I'll ask for water. In the meantime you must keep him as cool as you possibly can.
SUSAN: You can't go alone, Ian. I have to go with you.
IAN: No, I want you to stay here, Susan.
(A Dalek enters.)
DALEK 1: You must leave now.
IAN: I'm not well enough yet.
DALEK 1: You must leave now.
IAN: My legs are still...
DALEK 1: Which one of you is going?
(Ian tries to walk and falls.)
IAN: You must give me more time.
SUSAN: Can't you see how weak he is?
DALEK 1: There are others.
BARBARA: Oh, Ian, I can't. The whole room's going round.
SUSAN: Must I? Alone?
BARBARA: You can't let her go alone. She's just a child. Plead with them. Anything!
IAN: Susan, you see how ill they both are. We can't afford to wait until I can walk. An hour might make all the difference.
SUSAN: I'm so afraid.
IAN: Don't stop for anything. Straight there, straight back.
DALEK 1: Are you ready?
IAN: Yes, all right.
SUSAN: I'm coming now.
(The Dalek and Susan leave.)
BARBARA: The others in the forest. He said they were mutations.
IAN: What else could I do?

[Control room]

DALEK 2: The child has set out.
DALEK 1: Her direction is being followed on the rangerscopes? Mark her movements carefully.
DALEK 2: If she returns with the drugs, am I to allow the prisoners to use it?
DALEK 1: No. They will die in time. There only value is in bringing us enough of the Thal drug to duplicate it for our own use.

[Detention cell]

BARBARA: It's hit him so badly, Ian.
IAN: Yes. How are you feeling?
BARBARA: Oh, I ache all over.
IAN: I think even if they left the doors wide open we wouldn't have the strength to crawl through them.
BARBARA: How long has she been gone?
IAN: About an hour. She should just be on the edge of the jungle by now.
(There's thunder, wind and lightning as Susan makes her way through the petrified jungle.)
BARBARA: He's so hot. It's like a fever.

[Control room]

DALEK 2: The old man is dying.
DALEK 1: Then he must die.

[Detention cell]

BARBARA: Even if Susan got back now, I don't know whether she'd be in time.

[Control room]

DALEK 1: What of the girl? Has she reached the jungle?
DALEK 2: Yes, the rangerscopes tracked her that far. Now they have lost her.

[Detention cell]

IAN: Barbara, come on now.
BARBARA: I'm all right.
IAN: Sit down. No, you rest. You can't do anything more for him.
BARBARA: It's so hot in here.
IAN: Hurry, Susan.
(Susan is running, terrified, through the jungle.)
IAN: Hurry, Susan.

[Tardis]

(Susan has made it, and picks up the box from the chair where she left it. She remembers what she was told.)
IAN [OC]: Don't stop for anything. Straight there, straight back. An hour might make all the difference.
SUSAN: I must. I must.
(She opens the doors again and steps out into the storm.)

[Jungle]

(Where she meets a tall blond man.)
SUSAN: Who are you? What do you want?
ALYDON: Don't be afraid.
SUSAN: What do you want? But they said you were... But they called you... But you're not. You're perfect.
ALYDON: I have come now to make certain you understand how to use the drugs I left for you.
SUSAN: You left? But we thought they had been dropped by accident.
ALYDON: No.
SUSAN: We didn't even know they were drugs.
MAN: You mean you haven't taken them yet? But you must.
SUSAN: That's why I came back, you see. My grandfather and two of my friends are prisoners in the city and...
ALYDON: No, please, please, you're too quick for me. There are four of you, I know that. I've watched you. And what do you mean, prisoners?
SUSAN: Well, don't you know about the Daleks? You see, the Daleks want the drugs too, and they won't let us go until I bring them back to them.
ALYDON: But why should they want the drugs? Surely they must have some themselves if they're still alive.
SUSAN: I don't know. Look, my grandfather and my friends are terribly ill. I must take the drug back to them.
ALYDON: No. No, no, wait. Are you sure the Daleks want the drugs for your friends and not for themselves?
SUSAN: I hadn't thought of that.
ALYDON: Do you trust them?
SUSAN: No. I'm not sure.
ALYDON: You still have the drugs I left for you. I shall give you a further supply which you must hide as best you can. Do you trust me?
SUSAN: Yes.
ALYDON: I am Alydon of the Thal race. I shall go with you through the forest to the outer wall of the city, if you will allow me.
SUSAN: Oh, thank you. I don't understand. They said you were... Well, they called you mutations.
ALYDON: Here, take my cloak. You're cold.
SUSAN: Thank you.
ALYDON: We are the survivors of a final war. But the radiation still persists and that is why your friends are ill. I wonder if the Daleks have seen us?
SUSAN: Seen you?
ALYDON: I mean, if they call us mutations, what must they be like?

[Control room]

DALEK 2: I have returned the girl to the cell.
DALEK 1: Very well.
DALEK 2: They are asking for water.
DALEK 1: Give them some. It is clear that the girl must have made contact with the Thals.
DALEK 2: Our prisoners could bring the Thals to us.
DALEK 1: Precisely that.

[Detention cell]

SUSAN: The Thal said the drug would act quickly.
IAN: Don't give him any more water, Susan. His pulse is steady now anyway.
BARBARA: My arms are tingling.
SUSAN: Yes, Alydon said you'd feel that. It just means the drug's working, that's all.
IAN: This Alydon of yours seems to have kept his wits about him. Giving you that extra supply of drugs.
SUSAN: Yes. It was strange when the Daleks found it. I thought first of all they were going to keep both lots. Then they suddenly seemed to change their mind and gave the second lot back to me.
DOCTOR: Susan.
SUSAN: Grandfather? You'll feel better soon. I brought the drugs back.
DOCTOR: Give me a little while and then we must go back to the ship.
SUSAN: No, we're still prisoners.
DOCTOR: Oh, are we? Oh, yes. Well, we must leave here soon. We must leave.
SUSAN: As soon as Grandfather's properly awake we must try and find a way of helping the Thals.
BARBARA: We can't even help ourselves, locked up in here like this.

[Jungle, outside the Tardis]

(A group of Thals arrive.)
ALYDON: Ah, Ganatus.
GANATUS: Alydon.
ALYDON: You've been longer than I thought.
GANATUS: The path was rough.
ALYDON: The dead city lies over there.
TEMMOSUS: (a man with a headdress) Get the tent here, towards the west.
DYONI: (a young woman) What is it, Temmosus.
TEMMOSUS: This must be the craft in which the strangers arrived here. So, Alydon, we were right to believe the city inhabited.
ALYDON: Yes, Temmosus.
TEMMOSUS: I wonder what they'll be like. How they'll be disposed towards us.
GANATUS: They are Daleks.
TEMMOSUS: Yes, but we've changed over the centuries. Why shouldn't they? The once famous warrior race of Thals are now farmers.
DYONI: But the Daleks were teachers, weren't they, Temmosus?
TEMMOSUS: Yes, they were. And philosophers.
GANATUS: Perhaps they are the warriors now.
TEMMOSUS: From the distance, the city looks as if they make science and invention their profession. It's a magical architecture. Perhaps we can exchange ideas with them, learn from them.
GANATUS: Perhaps.

[Detention cell]

SUSAN: Alydon says the Thals are going to starve unless they can find new supplies of food. You see, after the war, the Thals that survived managed to cultivate small plots of land. Well, that's how they've survived ever since. But they've always had to be very, very careful, because the crops have always been in danger. But, you see, they rely on a great rainfall that only happens about every four or five years. Well, it's two years overdue now, and all their crops are ruined. Well, that's why the whole Thal race had to leave their plateau...

[Control room]

SUSAN [on monitor]: ..and go in search of food. Alydon says, unless we can help them arrange some sort of treaty with the Daleks, they're all going to die.
IAN [on monitor]: But how can we, Susan?
SUSAN [on monitor]: Well, he wants to talk to the Daleks. He said if they agree to supply food for them, then one of us must take a message outside the city.
DALEK 2: We could arrange a fake treaty with the Thals. Let us contruct a false message from the young female prisoner, using her name. Susan. And we can lead the Thals into our city.
DALEK 1: Then we will exterminate them.

[Detention cell]

DOCTOR: The point is, how do we get out of here?
SUSAN: We must try and talk the Daleks.
IAN: We must find a way of putting these machines out of action.
BARBARA: Yes. Remember what they did to your legs.
DOCTOR: The floors are metal. All the floors are metal.
BARBARA: Well, so are the streets of the city outside.
DOCTOR: Why? Why do they use metal? Is it because it lasts longer? Or because...
IAN: Because it's essential to them.
DOCTOR: Have you noticed, for example, that when they move about there's a sort of acrid smell?
SUSAN: Yes, yes, I've noticed that.
BARBARA: I know. A fairground.
IAN: That's it. Dodgems.
DOCTOR: It's electricity. I think they're powered that way.
IAN: They have no pick-up or anything. And only the base of the machine touches the floor. How do they complete the circuit?
SUSAN: Batteries?
DOCTOR: No, no. No, I believe the Daleks have discovered a way to exploit static electricity. Very ingenious, if I'm right.
BARBARA: What, drawing power from the floor?
DOCTOR: Precisely.
IAN: Susan. The cloak the Thals gave you.
SUSAN: Yes, it's just behind you.
IAN: Barbara, come here. What do you think this is made of?
BARBARA: I don't know. It isn't plastic, I don't think it's nylon either.
IAN: Whatever it is, it'll do for what we want.
DOCTOR: And what will it do, young man, hmm?
IAN: Insulate. If you are right, Doctor, about the Daleks taking up power from the floor, this is a perfect way of putting them out of action.

[Thal camp (outside the Tardis)]

GANATUS: This was found at the city gates.
ALYDON: What does it say?
TEMMOSUS: They're going to help us! It's signed by the girl, Susan. She says the Dalek people have no malice towards us, and they hope that they can work with us to build a new and safe world, free from the fear of war. They have the ability to produce food by means of synthetic sunlight, and they have left a quantity of it in the entrance hall of their main building. We are to collect it tomorrow. So there is a future for us.

[Detention cell]

(Susan is listening at the door.)
SUSAN: Shh. He's coming.
DOCTOR: Ready?
IAN: Yes.
DOCTOR: Now all of you watch very carefully. See that you notice every detail in that machine, right?
(The door opens. The Dalek is bringing a tray.)
DALEK 1: Move back from the door.
(Susan and Ian move into the middle of the room.)
DALEK 1: Take the food.
(Susan does, and gives it to the Doctor. The Dalek backs out and the door closes.)
IAN: I'll be able to jam the door with a piece of this. (the spy camera)
SUSAN: He seemed to be able to cover all of us.
BARBARA: It's impossible to hide from it.
IAN: Yes. Perhaps we can throw a coat over the lens.
BARBARA: Surely it would see you.
IAN: Yes. Doctor, perhaps we can stage something. You know, a distraction. And when the lens looks the other way, throw something over it.
BARBARA: Now, wait a minute. Susan, throw me your shoes.
(Barbara picks the jungle soil off the soles.)
IAN: What are you up to?
BARBARA: Making mud.
(Later.)
DOCTOR: If he's on time, we have three minutes.
IAN: I'm ready.
DOCTOR: How's the mud?
BARBARA: It's very sticky and very nasty.
DOCTOR: Very good. Very good idea.
SUSAN: Shall I spread the cloak over?
DOCTOR: Yes, yes. Not too near the door. We don't want to make him suspicious.
SUSAN: Just down there?
DOCTOR: Yes, yes. Quickly. Good, child.
IAN: He's coming.
(Ian slides the camera under the edge of the door as it starts to open, and rolls into the middle of the room with everyone else.)
DALEK 1: Take this.
(Susan takes the tray, and the Dalek backs out. The door fails to close and an alarm sounds. The Dalek comes back in.)
DOCTOR: Now!
(Barbara slams the mud over the eyepiece.)
DALEK 1: My vision is impaired. I cannot see. Keep away. Keep away from me. Keep away from me.
(The Doctor and Ian try to drag it onto the cloak. It starts to flail around.)
DALEK 1: Keep away from me! Keep away! Keep away!
IAN: Look out.
DALEK 1: Keep away from me! Keep away from me! Keep away from me! Keep away from me! Keep away from me!
(Finally they push it onto the cloak.)
SUSAN: Yes, I got it!
DOCTOR: Well done, Susan.
BARBARA: Ian, come on out of the way.
DOCTOR: Are you all right, Susan?
SUSAN: Yes, Grandfather.
DOCTOR: Splendid, splendid.
IAN: I think I'm all right. Swing it round. Keep out of the way, Susan.
SUSAN: Yes.
IAN: Now, I think it's worked. Take your hand off the gun. It has! It's worked! Now, there must be a catch here somewhere. I've found one.
(He lifts the Dalek lid, and puts it down again very quickly.)
IAN: Susan, Barbara, go in the corridor and keep a lookout.
BARBARA: Yes.
IAN: You'll have to help me. (they lift the lid again) Let's roll it off the cloak. A bit more, all right?
DOCTOR: Yes.
IAN: Give me that cloak. That's it. All right. Now.
(They wrap the cloak around the contents of the Dalek.)
IAN: Lift.
(The Doctor dumps it in the corner.)
BARBARA: Ian, hurry.
IAN: Now, see if I can get inside it. All clear in the corridor?
SUSAN + BARBARA: Yes.
SUSAN: I think there's a sentry down the other end of the corridor.
BARBARA: Well, they made such a terrible noise.
IAN: Not much room for my legs, but try the top.
DOCTOR: Barbara, Susan, give me a hand. Move it down gently. (they lower the lid) How is it?
IAN: (Dalek-like) It's very cramped indeed.
DOCTOR: Well, can't you sound more like a Dalek?
BARBARA: Yes, in a monotone. You've heard them.
IAN: Do you mean like this?
DOCTOR: That's it.
SUSAN: Can you see all right?
IAN: No. There's some sort of screen. No, it's the mud. Wipe the mud off the lens.
SUSAN: Oh, yes, all right. It's all clogged up. Is that better?
IAN: Yes, I can see now.
SUSAN: Good.
IAN: I can't make this thing move. It's full of controls.
DOCTOR: Don't worry, we'll push you.
IAN: It moves well enough.
SUSAN: Yes.
BARBARA: Surely they'll know that we're pushing you.
DOCTOR: No, no, no, it won't be suspicious at all.

[Corridor]

IAN: All right now, Susan, Barbara. You get in front and pretend I'm taking you for questioning.
SUSAN: Right.
BARBARA: Yes.
IAN: And Susan.
SUSAN: Yes?
IAN: You lead us. You know the way.
SUSAN: All right. This way, then.
(and a little clawed hand pokes out from under the cloak in the cell.)

[Corridor]

(Barbara and Susan are still pulling Ian along by the sink-plunger.)
IAN: Hey. Let go a minute. I think I've found out how to operate this thing. Yes, I can. Quick, Doctor, get in front. Ready? Off we go.
(A little further along.)
SUSAN: There's a great iron door with a Dalek on guard.
DALEK: Stop.
SUSAN: And beyond the door there's a lift.
IAN: The council wishes to question the prisoners.
DALEK: I have not been informed. Wait.
SUSAN: No! I'm not going! No!
IAN: Help me to get them inside.
(The Dalek pushes Susan into the lift.)
DALEK: Shall I help you to the fourth level with them?
IAN: No. Close the doors.

[Lift entrance]

(Once the door is closed, the Doctor pulls a lead from a sensor near it.)
DOCTOR: That's fixed the door.
BARBARA: That was a very good idea, Susan.
IAN: Well, help me to get out of this thing. I'm suffocating.

[Corridor]

DALEK: The door is locked. Emergency alarm.

[Lift entrance]

DOCTOR: Chesterton, try and force it up from the inside.
IAN: I'm trying. I, I can't move it!
DALEK 1 [OC]: Attention. Immobilise lift shaft seven floor area.
DOCTOR: They're cutting through the door.
SUSAN: Ow! That door's red hot.
BARBARA: We'll have to move you into the lift.
DOCTOR: Yes, but hurry, hurry.
SUSAN: It's stuck.
BARBARA: I don't understand it. It moved easily enough before.
DOCTOR: They've magnetised the floor. You feel it?
BARBARA: Are you sure?
DOCTOR: Yes.
IAN: Take the others away in the lift, Doctor.
BARBARA: We're not going without you.
IAN: Don't waste time. Go on.
DOCTOR: When we get to the top, we'll send the lift back down for you. All right?
SUSAN: No!
IAN: Go on.
DOCTOR: Come on, Susan.
IAN: Barbara, for goodness sake, go.
SUSAN: Oh, no!
(The Daleks are cutting around the door. The three go up on the lift platform.)
SUSAN: But even if he does get out, he's stuck down there. His only way out is the lift. We must go back for him!
DOCTOR: Susan, it's no good. We cannot do anything for him now, child.

[Lift entrance]

IAN: I must escape.

[Level One]

(Barbara, Susan and the Doctor get out of the lift and send it back down again.)
BARBARA: We should never have left him. It's so slow. It'll never reach him in time.

[Corridor]

DALEK 1: It is nearly completed.

[Lift entrance]

DALEK 1: Exterminate. Exterminate.
(The Daleks enter the room and fire at the Dalek shell. It falls apart.)
DALEK 1: It is empty.
DALEK 2: Lock the lift.
DALEK 1: The emergency switch. Bring it down.

[Level One]

BARBARA: Come on, Ian. Come on.

[Lift entrance]

DALEK 2: Lift disabled.

[Level One]

(He gets out just before the lift goes back down again.)
IAN: They had about two inches of that door to cut through when I got out.
SUSAN: Are you all right?
IAN: Yes, thank you, Susan.
DOCTOR: Well never mind that now. We must try and find a way out of this room.
BARBARA: Daylight!
IAN: Yes, but where exactly are we?
DOCTOR: We're right at the top of the building. See over there? There's the edge of the petrified jungle.
IAN: Yes.
BARBARA: Everything looks so different from above. Do you see anything at all that looks fa...
IAN: What is it?
BARBARA: Ian?
IAN: What's the matter?
BARBARA: There's someone down there. Look, by that sort of gateway thing beyond the low building. I saw someone cross that space.
DOCTOR: A Dalek?
BARBARA: No, it was a man. A human being.
SUSAN: The Thals! They've come for food supplies.
DOCTOR: They're walking into an ambush.

[Food area]

(A cautious Alydon is leading Ganatus, Temmosus and a few other Thals to the main entrance.
Four Daleks are in alcoves around the food supplies.)
DALEK 1: They are approaching.
(The Daleks conceal themselves.)
DALEK 2: Make no attempt to capture them. They are to be exterminated.
TEMMOSUS: I wonder what they'll be like. How they'll be disposed towards us.
GANATUS: They are Daleks.
TEMMOSUS: (reading the message) It's signed by the girl, Susan. She says the Dalek people have no malice towards us, and they hope that they can work with us to build a new and safe world, free from the fear of war.
(Temmosus leads the Thals in, as Ian watches from his hiding place.)
TEMMOSUS: Daleks, can you hear me? The Thal people wish to live in peace. If this is your wish too, then let us work together to rebuild our world. We need your help, and in return we'll make the soil live again, grow crops, build homes. The time for enmity is passed. If this is the kind of future that you want, then send for us and we shall talk.
(The Daleks come out of their concealment, behind him.)
TEMMOSUS: You need not decide now. We've been waiting for centuries. We shall go on waiting.
(He finally notices the Daleks, and tells his companions.)
TEMMOSUS: Take these things.
IAN: No! It's a trap! Get out of here! Run!
DALEK: Exterminate! Exterminate!
(Temmosus is killed. Ian gets away and Alydon hides as the Daleks go after the other Thals.)
DALEK: The Thals are escaping. Exterminate them.
DALEKS: All enemies of the Daleks must be destroyed. Exterminate them.

[Control room]

(A Dalek enters.)
DALEK 1: The prisoners have escaped into the jungle with the Thals.
DALEK 2: What of the drugs?
DALEK 1: The drug has been duplicated.
DALEK 2: And the distribution?
DALEK 1: The drug is to be taken by sections of us so work will not be interrupted.
DALEK 2: The laser scope is transmitting.
DALEK 1: Appearing now on frequency 6. It is the elder prisoner.

[Thal camp]

DOCTOR: These records must go back nearly half a million years.
DYONI: The complete history of our planet Skaro is here. It seems now that no one will survive to read it.
DOCTOR: Oh, nonsense, young lady. Your survival is all here.

[Control room]

DALEK 2: Show second picture.
DALEK 1: That is the younger prisoner.

[Thal camp]

AYLDON: This is the man who shouted to warn us.
GANATUS: Thank you. Did the others get away, Alydon?
ALYDON: Temmosus was killed. The rest of us escaped.
GANATUS: You must take the place of Temmosus now.
ALYDON: Yes. Yes, I know. If only I knew why the Daleks hated us.
IAN: They're afraid of you because you're different from them.
DYONI: What would you have us do? Fight against them?
IAN: I didn't say that. But you must teach them to respect you. Show them some strength.

[Control room]

DALEK 1: They have made contact with the Thals.
DALEK 2: It is logical that together they will attack us.

[Thal camp]

IAN: What What would you do if the Daleks could leave their city? If they came up here and attacked you?
ALYDON: We would go away, back to our plateau where we came from.
BARBARA: You'd simply run away?
IAN: Alydon, you can't go on running away. There are some things worth preserving.
GANATUS: We're not afraid to die. Temmosus proved that.
IAN: I am not talking about dying. Look, you can't hand yourselves over to the Daleks. Sooner or later, they're going to try and destroy you if they can.
ALYDON: I can see you want to help us, but as Dyoni says, you don't understand. There can never be any question of the Thals fighting the Daleks.
(A cortege walks past, carrying Temmosus' body.)
IAN: I wonder if there's any point in reminding the Thals of what they used to be?
DOCTOR: Our fate doesn't rest with the Thals, surely. Let's leave well alone. We have ourselves to worry about. Now, come along, come along. Wasting time.
IAN: Maybe the Doctor's right.
BARBARA: Let's get in the ship and get as far away from here as possible.
DOCTOR: Oh, please, come along. Oh, by the way, let me have the fluid link, will you? Oh, dear boy, now please, please, come along. You know I can't start the ship without it.
IAN: The fluid link.
SUSAN: You've lost it?
BARBARA: Ian, you can't have.
IAN: No. The Daleks took it from me when they searched me. It's down there somewhere. In the city.

[Control room]

DALEK 2: Report.
DALEK 1: The Thal drugs have been administered to all Daleks in section 3.
DALEK 2: When the effects of the drugs are known, you will report back immediately.
DALEK 1: I obey.

[Thal camp]

BARBARA: We'll be prisoners here unless we can think of some way of getting that fluid link back from the Daleks.
IAN: I've got an idea. But whatever I do, don't interfere. I'm not even sure that I'm right.
(He goes and picks up the container of all the Thal history.)
IAN: Well, let's see what happens.
DOCTOR: Hmm, strange young man.
(Ian is talking to Alydon and the Thals.)
IAN: At this moment, anyone could come in here. They could rob, they could steal.
ALYDON: We will not fight. There will be no more wars. Look at our planet. This was once a great world, full of ideas and art and invention. In one day it was destroyed. And you will never find one good reason why we should ever begin destroying everything again. I'm sorry.
IAN: You're not sorry. You stand here, mumbling a lot of words out of your history. But it means nothing, nothing at all. You carry this around with you. Your history records. Well, it must be valuable to you. Supposing I take it down to the city and try and trade with the Daleks? Perhaps they'd think it valuable enough to exchange for our fluid link.
ALYDON: I don't believe you'd do it.
IAN: I would.
ALYDON: None of us would stop you.
IAN: If I don't get the fluid link back, the four of us will die. Perhaps the Daleks are more interested in people? Maybe they were holding us to experiment on us? I could take them an alternative.
(Ian grabs Dyoni by the arm and starts to lead her off. Alydon grabs Ian then punches him.)
IAN: So there is something you'll fight for.

[Experiment chamber]

(A Dalek is whirling round and round.)
DALEK: Help. Cannot control. Cannot control. Help me. Help me. Help! Help! Help! Help! Ah! Ah! Ah! Ah!

[Control room]

DALEK 2: Emergency. Emergency. All Daleks in section 3 are incapable of working.
DALEK 1: Section 3? That was the first section to get the anti-radiation drug received from the Thals.
DALEK 2: Stand by for a general announcement. This is control. All distribution of the anti-radiation drug is to be stopped immediately. The Dalek race has become conditioned to radiation.
DALEK 1: But if you are right, we are in danger. Look, the disease has reached us in here.
(A Dalek is spinning around on the spot.)
DALEK 1: What are we to do? Is this the end of the Daleks?
DALEK 2: We need radiation to survive. So we must increase our supply of radiation.
DALEK 1: But there is only one way to do that.
DALEK 2: Exactly. We may have to explode another neutron bomb.

[Thal camp]

ALYDON: I have one question to ask you. If we do not help you, what will you do?
IAN: We'll find our way into the city, and take back our lost equipment.
ALYDON: You see, we cannot stand by and let these people die. If we do not help them, it would be the same as if we had killed them ourselves. Well, the way I have reasoned is this. The Daleks are strong and they hate us. And I am sure they will find a way to come out of their city and kill us. So it is not merely a question of whether we go off in a vain search for food and in all probability starve to death. We face death now. In the city is enough food for all of us and all of the Daleks, a hundred times over. My conclusion is this. There is no indignity in being afraid to die. But there is a terrible shame in being afraid to live. If none of you agree with my reasons, then let me go with these people, and I will help you elect a new chief.
GANATUS: I'll go with you, Alydon.
THAL: And I.
THAL 2: Let's start at once.
ANTODUS: And I.
IAN: Thank you.
(Ganatus has got a map of the area.)
DOCTOR: I suggest we split into two groups. The one to distract the Daleks on the city wall side, and the others to try and force a way through the mountains. Are we all agreed?
ALYDON: Yes. Very well then. That is what we must do.

[Swamp]

ANTODUS: We'll never get through.
GANATUS: Yes, we will. We promised Alydon we'd find a way through the mountains, and that's what we're going to do.
ANTODUS: You'd never get the others to follow you if you told them what happened the first time. It's your duty to tell them.
GANATUS: You keep your fears to yourself. I don't want you upsetting the others. Is that clear?
ANTODUS: Yes.
GANATUS: Well, is it?
ANTODUS: Yes!
(Antodus moves on, Ian arrives.)
GANATUS: Well, this is the swamp. From now on it's going to be rather uncomfortable.
IAN: Yes. We've made very good time. It's only taken four hours to get here from the edge of the forest. That leaves us with two and a half days to go through the mountains to the city.
GANATUS: If there is a way through.
IAN: We'll find a way. I'll go and give Barbara a hand.
GANATUS: I'm surprised you let her come.
IAN: I'd be more surprised if I could have stopped her. How are you doing?
(Barbara is wearing a pair of the Thal's leather trousers with cut-outs on the outside of the legs, and sandals.)
BARBARA: Fine. Oh, I'm glad the mountaineering's over.
IAN: There'll be some more once we get through this little lot.
BARBARA: We're going through there?
IAN: Well, we must. We've got a deadline with the Doctor and we've got to make it.

[Forest edge]

(Susan is using the binocular glasses to look at the city. Dyoni updates the map with information. They are trying to hide behind a rock.)
SUSAN: There are four roads that lead off from the main square, going north, south, east and west.
DOCTOR: Can you see any way in at all?
ALYDON: No.
DOCTOR: Oh, you'll allow me, will you?
(The Doctor takes the glasses.)
SUSAN: Grandfather, get down.
DOCTOR: Yes, yes, yes. Now, the things we have to put out of action is the radio and television waves. They've obviously got complete coverage in and around the city. Remember, the Daleks aren't very mobile.
SUSAN: Yes, we do have speed on our side.

[Lakeside]

(As they settle down for their meal, the swamp gets very noisy. Ian washes his face in the water. Something with glowing eyes rises up in front of him and he runs back to the camp.)
BARBARA: What was it? Did you see anything?
IAN: Yes, it was a...
GANATUS: Kristas, stand guard here, will you?
KRISTAS: Right.
GANATUS: We'll take the first watch between us.
IAN: I'm all right, really.
GANATUS: Yes, I know, but I think you two Earth people should get as much sleep as possible. We're more used to this kind of life.

[Control room]

DALEK 2: The report for the neutron bomb is prepared.
DALEK [OC]: Report on neutron bomb to cover five hundred square miles.

[Lakeside]

(We see a maelstrom open up in the lake, and then everyone hears a scream.)
GANATUS: Stay here.
(At the lakeside, the water bags are floating and the maelstrom is diminishing.)
ANTODUS: What is it? What's happened to Elyon?
IAN: There's nothing we can do here.
BARBARA: Ian.
GANATUS: It must have happened very quickly. Come on now. We must reach the cliffs by tonight.

[Cave]

GANATUS: It's getting narrower.
BARBARA: Oh, it's like all the other caves. Just tails off into a dead end.
GANATUS: There's a gloomy thought for you.
BARBARA: I wonder if Ian's doing any better?
GANATUS: Barbara, look! There's a passageway here.
BARBARA: Well, that won't be easy.
GANATUS: It's a good job we haven't been over-eating recently.
BARBARA: Be careful. Remember what Ian said. We're not to take any chances.
GANATUS: Do you always do what Ian says?
BARBARA: No, I don't.
(Ganatus crawls into the opening.)
GANATUS [OC]: Barbara?
BARBARA: Yes?
GANATUS: There seems to be a drop of about thirty feet or so. I'm going down.
BARBARA: Well, be careful.
(Barbara tries to use a boulder to hold the rope taut, but as the rope plays out, the boulder drags and her foot gets thrown off the rope. Ganatus falls.)
BARBARA: Ganatus? Ganatus!
IAN: What's happened?
BARBARA: I couldn't hold onto it.
IAN: Where's Ganatus?
BARBARA: It slipped through my fingers. He's down here, look.
GANATUS: (bottom of shaft) Barbara?
ANTODUS: Is my brother hurt?
BARBARA: It was my fault.
GANATUS: Barbara?
IAN: The rope, Antodus. Hang on a minute. Are you all right?
GANATUS: Yes. What happened to Barbara?
IAN: She's okay. Hang on, we'll be with you in a couple of minutes.

[Control room]

DALEK [OC]: Rangerscopes are recording great activity amongst the Thal people.
DALEK 1: Are there pictures?
DALEK [OC]: No, reception is bad.
DALEK 3: Emergency.
DALEK 1: They are attacking our instruments.
DALEK 2: We must keep alert.
DALEK 1: Yes.

[City wall]

DOCTOR: It looks as if my plan has worked.
ALYDON: We can't keep up this light reflection for long.
DOCTOR: Never mind. It gives us a better chance to get into the city unnoticed. I want to get to the east side of that antennae.
ALYDON: Doctor, look.
DOCTOR: Hmm?
ALYDON: According to the map, we should be moving further to our left, in that direction.

[Control room]

DALEK [OC]: Emergency. Emergency. Reaction on the vibrascopes.
DALEK 1: Where?
DALEK [OC]: Section fifteen, city wall.

[City wall]

DOCTOR: We'll show them a thing or two.

[Cavern ledge]

IAN: So far, so good. It seems to be broadening out a bit.
GANATUS: Who knows, it may stop being impossible.
BARBARA: Just become unbearable.

[Control room]

DALEK 2: Shall I redirect the rangerscopes?
DALEK 1: No. If we track them by their vibrations, we can take them by surprise.

[Cavern ledge]

(They have come to a gap in the ledge.)
IAN: Look out.
GANATUS: It looks pretty wide.
IAN: Yes, and deep. No place for a quiet stroll, is it? There's no foothold at all on this side. There's a ledge over there, look. About two to three feet, would you say?
GANATUS: There seems to be some sort of cleft in the rock face there.
IAN: Yes, I think you're right. We'll have to get over there.
GANATUS: How do we do it?
IAN: We jump.

[City wall]

(Susan has found a panel on a wall.)
SUSAN: Hey, Grandfather, look.
DOCTOR: Yes?
SUSAN: Is this what you want?
DOCTOR: Ah, yes, a single cable. The whole city is powered by static electricity.
ALYDON: Well how do you know that?
DOCTOR: Tell you what we'll do. short-circuit it to another conductor.
SUSAN: I wonder if I can open this box. Oh, that's it. Look, look, it slides up.
DOCTOR: Ah, good girl. Now, just take it over there. That's it. Now, look out.
(He breaks the internal glass panel.)
SUSAN: The thing is, how are we going to cut the wire now it's exposed without getting a terrific shock?
ALYDON: Look, we can't wait around here too long.
DOCTOR: No, just a minute. Now, you go and tell your friends to stop flashing the light on the antennae. Because for all we know, the Daleks might have a beam to throw on them, paralyse them, kill them.
ALYDON: But I can't leave you two here.
DOCTOR: We shall be all right. Now, go along, and tell them to move their position from time to time. Now hurry, please.
ALYDON: Very well, then. I'll come back for you if I can.
DOCTOR: Yes, yes, yes, yes. We shall be back before then.

[Cavern ledge]

GANATUS: We're going to jump it.
(Ian ties a rope around his waist.)
IAN: Shine the torch on that ledge. Keep clear of me when I run, and give me plenty of rope.

[City wall]

DOCTOR: Let me have the key of the ship, Susan, will you? The key of the ship, dear.
SUSAN: Oh, what a good idea. Yes.
DOCTOR: Yes, yes, yes. I can always make another one if necessary.
SUSAN: Of course.
(The key is on a chain around her neck. He drops it into the wall panel.)
DOCTOR: Now, the power's running away. That'll teach the Daleks to meddle in our affairs.
SUSAN: What about this one?
(Another small panel with a revolving disc.)
DOCTOR: Well, of course.
(He breaks the glass, and loops the chain up to connect to the panel.)

[Cavern ledge]

(Ian has made the jump.)
IAN: All right. Ganatus, you come over next. Good jump.
(Barbara leaps into Ian's arms.)
BARBARA: Oh, I thought I wouldn't make it.
KRISTAS: Will you go next, Antodus?
ANTODUS: No, you go on.
KRISTAS: Very well.
(Kristas does his leap.)
IAN: You made it look easy.

[Control room]

(Panels go bang.)
DALEK: Alert. We are under attack. Emergency. Emergency.

[City wall]

DOCTOR: Now, we've shorted it, you see. The extent of the damage, of course, we don't know yet.
SUSAN: Look, Grandfather, this is marvellous, but they must have a fault locator somewhere. We must get away from here.
DOCTOR: But, my dear child, don't you realise what I've done? A few simple tools....
SUSAN: Yes, but we mustn't waste time.
DOCTOR: ..a superior brain.
SUSAN: We must go now!
DOCTOR: But, child, look.
(He turns to see a phalanx of Daleks trapping them.)

[Cavern ledge]

IAN: Rope coming over.
(Antodus makes no attempt to catch it.)
IAN: Sorry. Bad throw, my fault. Move back from the edge.
ANTODUS: I can't do it.
IAN: Move back from the edge and catch this rope. Ready? Coming now. Good. Now, tie it round yourself. Tight! Now give yourself a good long run and jump. I'm ready whenever you are.
(Antodus jumps, but doesn't get a good foot hold and slips back into the crevasse. Ian is pulled off his feet and is hanging onto a rock for dear life.)
ANTODUS [OC]: Help me! Help me! I can't hold on. I can't hold on!

[Control room]

(The Doctor and Susan are sitting cross-legged on the floor.)
DALEK 1: You are guilty of an attack against the Dalek city.
DOCTOR: And you in turn killed the Thal leader in your ambush. And you will be responsible for more deaths unless you help these people.
DALEK 1: The only interest we have in the Thals is their total extermination.
SUSAN: What do you mean?
DALEK 1: Tomorrow the atmosphere will be bombarded by the radiation from our neutron bomb.
SUSAN: Why are you doing this?
DOCTOR: That's sheer murder.
DALEK 1: No, extermination.
DOCTOR: But you must listen to reason. Please, you must.
DALEK 1: Without radiation, the Dalek race is ended. We need it as you and the Thals need air.
ALL: Tomorrow, we will be the masters of the planet Skaro.

[Cavern ledge]

(Ian is losing his grip when Ganatus comes to help.)
GANATUS: I daren't let go with my other hand.
IAN: Antodus, get a grip on the rock face. Take the weight off the rope.
ANTODUS: It's too smooth.
IAN: Stop it, you fool!
GANATUS: I'm losing you.
IAN: Sweat on my hands.
GANATUS: It's no good, Ian.
IAN: Call the others.
GANATUS: Kristas! Kristas!
(So Antodus takes the weight off the rope by cutting it, and falling to his death.)
GANATUS: Antodus.

[Control room]

(Susan and the Doctor are fastened hand and foot to the walls. The first lines of dialogue are overlapping.)
DALEK: What we need for life means death for the Thals.
DOCTOR: You could live in the city and the others could. But why do you have to destroy? Can't you use your brains for right?
DALEK: Only one race can survive.
DOCTOR: What are you planning?
DALEK: We wish to escape captivity. Go out and rebuild the planet Skaro. Our neutron bomb will spread radiation for 500 square miles.
DOCTOR: Nothing can live outside if you do that. Nothing.
DALEK: Except the Daleks.
DOCTOR: When do you intend to put this into operation?
DALEK: Now.

[Forest edge]

DYONI: The antenna hasn't moved for some time.
ALYDON: No. The Doctor must have succeeded in putting it out of action.
DYONI: But why haven't they returned?
ALYDON: The Daleks must have captured them.

[Control room]

DALEK: The explosive device is ready for detonation.
DOCTOR: This senseless, evil killing.

[Forest edge]

ALYDON: Now listen, everybody. The way to the city is clear. Now is the time to attack. We may be farmers, but have we forgotten how to fight?

[Tunnel]

IAN: There's light coming in here. Where's it coming from?
BARBARA: Can you see anything?
IAN: Here. Give me a hand.
(Ian removes a few rocks and sees a Dalek corridor. )
IAN: We're through. We're through.

[Control room]

(Ian, Barbara, Ganatus and Kristas are making their way along a metal corridor.) SUSAN: Can't we stop them? Can't we do anything?
DOCTOR: Just a moment. I haven't told you how we came to this planet.
DALEK 1: It does not matter now.
DOCTOR: But it does. I have a ship capable of crossing the barriers of space and time. Surely this would be invaluable to you?
DALEK 1: A ship? What do you mean?
DOCTOR: A machine.
DALEK 1: I do not believe you.
DOCTOR: But I have.
SUSAN: It's true. We have.
DALEK 1: You are not capable of creating such a machine.
DOCTOR: And you took a part of my ship away from one of my companions. The young man.
DALEK 1: What did it look like?
DOCTOR: A small rod with metal at either end. It belongs to my ship. A fluid link containing mercury. Examine it for yourselves. You will see it's part of a complicated machine.
DALEK 2: Fluid link located.
DALEK 1: I have it here.
DOCTOR: What if we show you the ship? Explain it to you. Help you to build another?
DALEK 1: A bargain for your lives?
DOCTOR: Yes.
DALEK 1: Where is this machine?
DOCTOR: In the petrified forest outside the city.
DALEK 1: Good. When the neutron operation has been completed, we will find a way to travel outside the city limits. We will examine your machine.
DOCTOR: But you can't operate it without me.
DALEK 1: Every problem has a solution.
DALEK 2: Interior videoscopes are recording movement inside the city wall.

[Corridor]

BARBARA: Look out.
IAN: The Thals must be in the city.

[Control room]

DALEK 2: How did they get into the city?

[Corridor]

IAN: We must find that control room.

[Control room]

DALEK 1: The Thals have penetrated to level eight.
DALEK 2: All Daleks on level eight, urgent.
SUSAN: They're coming!
DOCTOR: But can they get here in time?
DALEK 1: Immediate action. Immediate action.
(Ian smashes the spy camera.)
SUSAN: They've found a way through.

[Corridor]

GANATUS: Alydon.
ALYDON: Ganatus. Have you found the Doctor?
BARBARA: Well, isn't he with you?
ALYDON: No, he must have been captured by the Daleks. And Susan.

[Control room]

DALEK 2: Neutron bomb ready for detonation.
DALEK 1: Stand by.
DALEK 2: Standing by. Ready to release.
DOCTOR: Please.
DALEK 2: Detonation in 50 rels.

[Corridor]

DALEK [OC]: Forty nine. Forty eight.
IAN: Get the door, quick! (but it closes) That one.
(Barbara gets underneath it as it closes.)
BARBARA: There's another one.
ALYDON: Quickly, Barbara, get to it.
DALEK [OC]: Forty.
IAN: Barbara!
(Barbara is caught under a closing door.)
DALEK [OC]: Thirty nine.
IAN: Quick. Wait a minute, I'll take the strain. Barbara, try and slide yourself out.
BARBARA: I can't move.
GANATUS: (who has also wedged himself under the door) They're pressing down harder.
BARBARA: I'm through.
(She helps Ganatus.)
DALEK: Exterminate.
(It shoots a Thal.)

[Control room]

DALEK [OC]: Twenty eight. Twenty seven. Twenty six. Twenty five. Twenty four.
(Ian is leading his group up the corridor.)
DALEK [OC]: Twenty three. Twenty two. Twenty one. Twenty.
(Ian and Alydon see Susan and the Doctor.)
DALEK: Nineteen. Eighteen. Seventeen.
(They dash over to the alcove where they are shackled to the wall.)
DALEK: Sixteen. Fifteen. Fourteen.
(Barbara throws a rock at a Dalek then gets away.)
DALEK: Exterminate!
DALEK 1: Follow and kill her.
DALEK 2: Exterminate the intruders.
DALEK 1: Increase power. Emergency.
DALEK [OC]: Seven.
DALEK 2: Exterminate.
(The Dalek gets grabbed by the group.)
DALEK 2: Help me. Emergency.
(Ian and Alydon free the Doctor and Susan, and they make a run for it as Thals pounce the Daleks and get shot for it.)
DALEK 1: Protect the neutron bomb. Exterminate.
DALEK [OC]: Five.
DALEK 1: You will die. Nothing can stop the Daleks. Under attack! Exterminate.
(A Dalek gets rammed into a control panel, with satisfactory results.)
DALEK 2: Countdown halted.
DALEK 1: Firepower failing. Power dying. Static electricity failing.
DOCTOR: Chesterton, come here. They were about to spread radiation into the air.
IAN: We've knocked out their source of power, I tell you. Look!
(And he kicks one across the room.)
SUSAN: Barbara, is he all right?
BARBARA: Yes. He's very badly hurt, but he's alive.
DALEK 1: Listen to me.
DOCTOR: Yes.
DALEK 1: (very slowly) Stop our power from wasting or it will be the end of the Daleks.
DOCTOR: Even if I wanted to, I don't know how.
ALYDON: It's finished. The final war. Five hundred years of destruction end in this.
DOCTOR: No doubt you will have other wars to fight. Chesterton, come along, my boy. We've got work to do. I want to look at the reactors and see if there's any radiation leakage.
IAN: Yes, and get the ship working again, Doctor.
(holds up the fluid link.)
DOCTOR: Hmm? Oh, yes, yes, yes, of course. Come along. Come along.

[Thal camp]

DOCTOR: You know, this soil is not quite so barren as you think. I've been making tests, and even you might live to see and hear the birds amongst the trees. How I envy you.
ALYDON: But you must stay and help us. We could learn from you.
DOCTOR: Oh, no, no. I'm afraid I'm much too old to be a pioneer. Although I was once amongst my own people.
ALYDON: Well then, stay and advise us. Please.
DOCTOR: No, no, thank you. We're much too far away from home, my granddaughter and I. You wanted advice, you said. I never give it. Never. But I might just say this to you. Always search for truth. My truth is in the stars and yours is here.
(The Tardis dematerialises.)

And then the story continues - for 60 years.
DOCTOR: Our lives are important, at least to us. As we see, so we learn. Our destiny is in the stars, so let's go and search for it.
TOYMAKER: Make your last move, Doctor. Make your move.