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first transmitted - 29th April 1967
running time - 24mins 28secs


(ANN DAVIDSON comes back onto the flight deck.)

BLADE: Good.

(BLADE switches on a monitor above his head, and CROSSLAND, still clamped helplessly in his chair, looks down the long central aisle, with row upon row of young passengers on either side. They sit docilely in their places, seat-belts fastened, waiting for take-off. BLADE turns to CROSSLAND and smiles.)

BLADE: You wanted to know the secret of Chameleon Tours. Well Inspector, see for yourself!

(BLADE turns a control in the control panel in front of him. CROSSLAND stares at the monitor in unbelieving horror. Suddenly the rows and rows of seats are empty. The entire plane-load of passengers has disappeared!.)


(JAMIE kneels down by the DOCTOR, desperately trying to revive him while the episode titles are shown. He has just decided to give up and carry the DOCTOR somewhere he can get help when he becomes aware of someone standing over them. It is SPENCER, a ray gun in his hand.)

JAMIE: Doctor!
SPENCER: He's dead! You're coming with me.

(JAMIE shakes his head.)

JAMIE: I'll not leave him.
SPENCER: You have five seconds to change your mind.
JAMIE: You'll have to kill me then.
SPENCER: I said five seconds. Five, four, three...

(JAMIE sees SAMANTHA coming through the door of the hangar. She takes in the situation instantly, swings round to a pile of oil-cans by the door and gives the bottom of the cans a mighty kick. The pile of cans falls with a tremendous clatter...)


(...and instinctively SPENCER swings round - and JAMIE jumps him. With a wild, flailing blow he knocks the gun from SPENCER's hand. SPENCER dives for it, but SAMANTHA comes sprinting up and kicks it away. JAMIE and SPENCER grapple furiously and soon, for all JAMIE's youth and strength, he begins getting the worst of it. SPENCER has a strength that seems more than human. SAMANTHA joins in the struggle, leaping on SPENCER's back from behind and winding her arms around his throat in a determined attempt to throttle him. With a desperate effort, SPENCER manages to free one hand from JAMIE's grip and plunge it into his pocket. The hand comes out with a silvery pencil-like device and too late JAMIE realises what it is. SPENCER aims and fires and an icy chill blasts all consciousness from JAMIE's body. He slumps to the ground, and seconds later SAMANTHA lies beside him.

Panting with effort, SPENCER gazes down at his three defeated enemies. He goes to the corner of the hangar, retrieves his ray gun, raises it and then lowers it again. He thinks for a moment, and then puts the three bodies in a row, first JAMIE, then SAMANTHA, and then the DOCTOR. He goes to a storage cupboard and produces a black metal case with a circular base and a projecting lens. It is an advanced automatic light-cannon. SPENCER makes careful adjustments to the control panel on the back, sets up the device and switches it on. A thin light beam shoots from the lens. It is a few inches from the floor and a few feet to JAMIE's left. Spencer touches the controls again and the beam begins swinging round, very, very slowly, edging closer and closer towards JAMIE. SPENCER turns and hurries from the hangar, laughing at the fate that awaits them.)


(Still in a state of shock, CROSSLAND watches uncomprehendingly as ANN DAVIDSON takes a large segmented container from a locker and goes out into the main cabin.)

CROSSLAND: I suppose there's no use my asking where this plane's going to?

(BLADE, at the controls, glances briefly over his shoulder.)

BLADE: You will know soon enough.

(As if reminded of something he flicks a control and speaks into a microphone.)

BLADE: This is Plane Number Three to Base. Inform the Director that I have an original for him as ordered. I am delivering him now, and will return immediately to Gatwick Airport.


(The three victims are recovering consciousness, but not their power of movement.)

SAMANTHA: (Croaking.) Jamie? Are you all right?
JAMIE: Aye. Th... They've not harmed you, have they?
SAMANTHA: No - but I can't move.

(JAMIE tries to sit up and finds that his limbs are held fast in icy paralysis.)

JAMIE: Doctor?
SAMANTHA: Are you all right?
DOCTOR: What's happening? I... I can't move. What's that?

(SAMANTHA's head is pointing in the right direction.)

SAMANTHA: I... I don't know. It's a beam of light.
JAMIE: Aye. Doctor, it... it's moving towards us!

(As they watch, the edge of the beam reaches a little pile of wood shavings, which immediately bursts into flame.)

DOCTOR: That's just a small fore-taste of what'll happen to us if we don't move and quickly.
JAMIE: But I can't move, Doctor!
SAMANTHA: Neither can I.

(SAMANTHA struggles frantically.)

SAMANTHA: Wait a minute. I can move one arm.

(She manages to reach out and touch her handbag, which is still been twined about her wrist from when she fell.)

SAMANTHA: But I can't move away!


(JENKINS, the immigration officer on Desk Five, has received a sudden, mysterious summons to report to the First Aid Station. Within minutes of his arrival, he has been frozen into unconsciousness and now sits in a machine, while next to him another form - the CHAMELEON-JENKINS - is forming under the watchful eyes of the CHAMELEON-PINTO.)


SAMANTHA: Oh Doctor! Can't you do anything to stop it?

(The DOCTOR is thinking furiously.)

DOCTOR: Wait. One thing. It's a long chance but it just might work. (To SAMANTHA.) Have you got a mirror in that bag?
DOCTOR: Let's see.

(SAMANTHA struggles and manages to get the mirror out of the bag using her good arm.)

DOCTOR: Yes, that'll do. Hand it to me.
SAMANTHA: I can't.
DOCTOR: I can't move my hand. Jamie, can you take it?

(SAMANTHA tries to pass it to JAMIE.)

SAMANTHA: Have you got it?
JAMIE: No, careful!
SAMANTHA: Take it!

(JAMIE gets it.)

JAMIE: Got it!
DOCTOR: Right now, see if you can point it at that laser gun.
DOCTOR: Th... that thing on the wall.
JAMIE: I... I'll try, Doctor. But why?
DOCTOR: Well, if you can reflect the light back, we've got a chance.

(Tightening his grip on the mirror, JAMIE begins swinging it round towards the approaching beam.)

SAMANTHA: (Worriedly.) Can't you prop it up on something?
JAMIE: No, it won't work. I'll... I'll have to hold it.
SAMANTHA: But your... your hand.
JAMIE: It's a risk I'll have to take.

(The beam creeps closer.)

DOCTOR: Quick Jamie! Now!

(The second before it touches him, JAMIE thrusts the mirror at a right angle to the source of the beam. He feels an instant's searing pain but ignores it, adjusts the mirror a fraction and the black metal transmitter explodes into flames.)

DOCTOR: Oh, well done!

(Ironically, as soon as the danger is over the frozen trio begin to feel life creeping back into their limbs. Slowly and painfully they begin wriggling and stretching, struggling to get up. JAMIE manages to sit up first, his face streaming with sweat and the others start to rub life back into their limbs.)

JAMIE: Why... I can move!
DOCTOR: I... I wonder if...
JAMIE: Do you think that's what happened to Ben and Polly, Doctor?
JAMIE: Are you sure?
DOCTOR: I think they were needed for some purpose.
JAMIE: We weren't.
DOCTOR: We were obviously too dangerous for them.

(SAMANTHA is now sitting up too.)

SAMANTHA: But to try and do something like this, in broad daylight!
DOCTOR: Yes. That means only one thing, I'm afraid. Their plans are almost complete. We'll have to act fast if we're going to save Polly and Ben.
SAMANTHA: And Brian, or have you forgotten about him.
DOCTOR: No, I've not forgotten him Sam, but if my guess is right, they're all in the same place.
JAMIE: And where's that?

(They all clamber stiffly to their feet.)

DOCTOR: I don't know. Wait! The first aid post!
DOCTOR: We saw a first aid post on that monitor.
JAMIE: (Understanding.) Aye.
DOCTOR: We must find it.

(The DOCTOR gets up and looks down at SAMANTHA who is having trouble getting up.)

DOCTOR: Come on, you're not going to sit there all day are you?

(The DOCTOR and JAMIE help SAMANTHA to stand up and all three begin moving a little stiffly towards the door.)

DOCTOR: Just a minute. We can't all go down to the Medical Unit.
SAMANTHA: All right. What can I do?

(The DOCTOR turns to SAMANTHA.)

DOCTOR: Did you get a good look at the man who tried to kill us?
SAMANTHA: I'll say. I had my arms around his neck.
DOCTOR: Go down to the Chameleon Kiosk and see if he comes in or out.
DOCTOR: But be careful. Don't let him see you.
SAMANTHA: Me be careful!? You two watch out for yourselves! I'll be OK!

(They make their way back to the main concourse and then split up. As SAMANTHA moves off towards the kiosk...)

JAMIE: She's got a lot of courage, that wee lass, Doctor.
DOCTOR: Yes. I just hope she doesn't try to be too adventurous.


(By now the CHAMELEON-JENKINS is complete and is undergoing final tests from the CHAMELEON-PINTO.)

CHAMELEON-PINTO: (Studying the file in her hands.) Who are you?
CHAMELEON-JENKINS: Steven Christopher Jenkins
CHAMELEON-PINTO: Where do you live?
CHAMELEON-JENKINS: With my parents in Wimbledon.
CHAMELEON-JENKINS: I'm an Immigration Officer, at Gatwick Airport.

(The interrogation brakes off as the doors open and an oddly-dressed little man comes in, supporting a burly youth in a kilt. The younger man's eyes are closed and he is breathing heavily. Three guesses who these two are.)

DOCTOR: Come along, easy. You'll be all right. Now come along, take it easy. We'll have you as right as rain in a minute. Now just get you down here. There we are.

(He puts JAMIE into a chair.)

DOCTOR: Splendid.
JAMIE: (Whispering.) How am I doing, Doctor?
DOCTOR: (Whispering.) Very well but don't over do it.

(He looks about.)

DOCTOR: Yes, this is the room. We see... saw on the TV monitor.

(CHAMELEON-PINTO takes CHAMELEON-JENKINS by the arm and leads him hastily to the door as JAMIE groans in his chair.)

CHAMELEON-PINTO: If the tablets do not help, come and see me again.

(She bustles him out and turns to the DOCTOR and his companion.)

CHAMELEON-PINTO: What's the matter with him?
DOCTOR: It's a rare tropical disease, Nurse. I'm his doctor. If he... if he doesn't rally soon we shall err... we shall have to use somnalin.
DOCTOR: Yes... yes, somnalin. I shall have to get him somewhere to lie down. Umm...

(Before CHAMELEON-PINTO can stop him, he opens the door to the inner room. CHAMELEON-PINTO hurries forward and sees to her relief that the inert form of the real JENKINS is completely hidden behind its screen.)

DOCTOR: Oh yes, this will do nicely.
CHAMELEON-PINTO: (Sharply.) I... I'm afraid you can't go there.
DOCTOR: Why not? It's just an X-ray room, isn't it? Isn't that a couch behind the screen.

(The DOCTOR tries to move forward again, but she bars his way.)

CHAMELEON-PINTO: I'm sorry, Doctor. You can't take your patient in there.
DOCTOR: You refuse to help my patient?
CHAMELEON-PINTO: Oh, it's not that. I have someone coming for an X-ray.
DOCTOR: Oh I see. Well why didn't you tell me in the first place.


(In the rear of the Chameleon Tours kiosk, SPENCER and CHAMELEON-JENKINS are watching all the activity in the Medical Centre on a monitor. The DOCTOR goes over to JAMIE, makes a pretence of examining him, and begins heaving him off of the couch. SPENCER flicks the monitor off as the DOCTOR and JAMIE leave the First Aid Post.)

DOCTOR: (OOV.) Let's get you out of here.
SPENCER: That Doctor is a menace to our plans.
CHAMELEON-JENKINS: Then we must kill him.
SPENCER: I tried. He must have escaped.
CHAMELEON-JENKINS: They won't escape me.

(He prepares to set off, but SPENCER detains him.)

SPENCER: No, wait. This time, let them to come to us.


(JEAN is talking into the phone.)

JEAN: I've been paging him, Superintendent, but he hasn't responded.

(She listens to the phone.)

JEAN: Yes, very well sir. I'll keep on trying.

(She breaks the connection and dials the operator.)

JEAN: Operator. Look, I booked a call through to Athens, now what happened?

(She listens to the phone.)

JEAN: Yes, very well, I'll stay near the phone.
COMMANDANT: What's all this about?

(JEAN looks up eagerly as the DOCTOR and JAMIE come into Air Traffic Control.)

JEAN: Oh Doctor, have you seen Inspector Crossland?
DOCTOR: Well no. Why?
JEAN: Well, Scotland Yard are looking for him and we can't find him anywhere. Also, your Miss Briggs wants to see you.
DOCTOR: But I told her to... Where is she now?
JEAN: Well she said something about going to the Chameleon Kiosk.

(The DOCTOR turns to JAMIE.)

DOCTOR: Go down and join her, Jamie. She's a very strong headed young woman. See she doesn't come to any trouble.
JAMIE: I'll keep an eye on her, Doctor.

(JAMIE hurries away. The phone rings and JEAN snatches it up, talking into it in a low voice as if she didn't want to be overheard. The COMMANDANT shoots her an irritated glance.)

DOCTOR: Commandant, did the Inspector say where he was going?
COMMANDANT: Hmm, oh he said he was going to make some enquires about Chameleon Tours.
DOCTOR: And now he's disappeared?
COMMANDANT: Aren't you rather jumping to conclusions?
DOCTOR: I don't think so. My two friends became involved with Chameleon Tours, and they've both disappeared. However, you know what I think wh... that's happened.
COMMANDANT: Yes, and you know what I think about your ridiculous theory. People from outer space, indeed.

(JEAN puts down the phone and stands up, her face white and shocked. The COMMANDANT stares at her.)

COMMANDANT: Something the matter with you?
JEAN: (In shock.) Commandant, I've found out what's been happening.
DOCTOR: (In delight.) Well, that's a step in the right direction.
JEAN: Wh... what I mean is I took the liberty of phoning all the airports that ah... err... Chameleon Tours fly to. The last on my list was Athens.
COMMANDANT: B... but don't you realise the expense of phoning Ath...
JEAN: Yes, I know, I'm sorry. But what I found out is - they never deliver any passengers.
COMMANDANT: (Stupidly.) What do you mean? Never deliver any passengers...
JEAN: It's absolutely true, sir. They all say the same thing. Dubrovnik, Athens, Rome. They say they pick up young passengers to take them off to other places but... none of them ever arrive anywhere!
COMMANDANT: Well in that case, they must be flying these young people to some secret airfield. But why?
DOCTOR: You're still thinking in Earth terms.
COMMANDANT: And I intend to go on doing so. Wh... what was the name of that Chameleon Pilot?
JEAN: Captain Blade.
COMMANDANT: And what er... what time is the plane due back?

(JEAN consults a schedule.)

JEAN: About half an hour sir.
COMMANDANT: Right. After the turn-round we'll have it followed this time.

(He snatches up the phone. The DOCTOR takes JEAN aside.)

DOCTOR: Might I have a word with you, my dear?
COMMANDANT: (Into phone.) Get me the RAF Station Manston.
DOCTOR: I suspect that the Medical Centre is connected with all this.
JEAN: Medical Cen... Oh come on...
DOCTOR: Now please don't get like him (Nodding toward the COMMANDANT). Oh yes, there is definitely a connection, now, I would like to get in there and have a look round.
JEAN: But anyone can go in there.
DOCTOR: But I would like to get that nurse out of the way first... Do you think that you can manage it for me?


(SAMANTHA is at the kiosk counter, talking to ANN DAVIDSON when JAMIE arrives.)

ANN DAVIDSON: (Giving her a ticket.) You'll find that in order.

(Catching her eye JAMIE sits down on their usual bench, and after a minute or two she comes over to join him.)

JAMIE: (Shaking his head.) He said you'd do something silly.
SAMANTHA: Oh yeah, what else did he say?
JAMIE: He said you were headstrong.
SAMANTHA: Oh great. Look, you can tell the Doctor he's not going to talk me out of this one, and neither are you. I'm going on the next Chameleon flight, that leaves in half a hour.

(JAMIE looks unhappy.)

SAMANTHA: Oh look don't you see it's the only way we can find out anything. Oh, don't worry. I'll come back and tell you all about it.
JAMIE: (Gloomily.) If you do come back.
SAMANTHA: Oh, it's only going to Rome.
JAMIE: And what makes you so sure you'll find your brother in Rome?
SAMANTHA: Oh, I don't know. But that's where he was supposed to be going. At least I'll be doing something.
JAMIE: (Worriedly.) Aye, but do you not realise how dangerous it is.
SAMANTHA: Look if you're scared, I'm certainly not.
JAMIE: I wish the Doctor were here.
SAMANTHA: (Angry.) Oh.
JAMIE: Hey, maybe I could go with you.
SAMANTHA: Hey, now you're talking. Do you think you can you raise the lolly?
JAMIE: The lolly?
SAMANTHA: The brass - the money. Look it will cost you twenty-eight quid - pounds to you.
JAMIE: Oh but that's a fortune. I've never seen that much money in my life. I suppose I... I couldn't take your place?
SAMANTHA: (Firmly.) No!

(She turns away. JAMIE sees the ticket envelope sticking out from her bag. Stealthily he reaches out for it...)

JAMIE: The Doctor said it was er... no job for a wee lassie...
SAMANTHA: A wee lassie!

(She swings round, nearly catching JAMIE in the act.)

SAMANTHA: You can tell the Doctor...
JAMIE: I say goodbye.

(JAMIE lunges forward and plants a clumsy kiss on SAMANTHA's cheek. Surprised and touched, she hugs him for a moment.)

SAMANTHA: Hey, kid! I can take care of myself, you know.
JAMIE: I just wanted to make sure.

( he slips the ticket from her bag and conceals it under his jumper. Leaving a puzzled SAMANTHA behind him, he hurries away.)


(The COMMANDANT has done a lot of fast and high powered talking on the telephone and at last he has got his way.)

COMMANDANT: (Into phone.) Hmm. So you can arrange to have it followed. Good. Oh I'll find out. (To JEAN.) What time's the next Chameleon flight?
JEAN: 1530hrs to Rome, sir.
COMMANDANT: (Into phone.) 1530hrs heading South. Right. And I'll let you know when they request permission to start up. Cheerio old man and many thanks.

(He slams down the phone.)

COMMANDANT: Well, that's settled that. The next Chameleon flight will have an RAF fighter on its tail.

(Suddenly JEAN puts a hand to her head and slides from her chair. Shocked, the COMMANDANT snatches up the phone again.)

COMMANDANT: Good grief. Jean. Jean!

(No response.)

COMMANDANT: What's the matter with the girl? (Into phone.) Get me the Medical Centre.


(The CHAMELEON-PINTO is talking to the COMMANDANT on the phone.)

CHAMELEON-PINTO: Isn't it possible for your assistant to come down here, Commandant.

(An angry voice blasts her from the other end of the phone.)

CHAMELEON-PINTO: But I'm not supposed to leave here.

(The angry voice blasts her again from the other end.)

CHAMELEON-PINTO: (Stiffly.) All right sir, if you insist.

(She slams down the phone, picks up a black medical bag and storms out.

A few minutes later the door opens and the DOCTOR comes in. He hurries over to the inner room. Once inside, the DOCTOR stands looking around him. He goes over to the machine that looks like an X-ray machine but isn't, and examines it thoroughly. A large cupboard is set into one wall. The DOCTOR tries the door, but it is locked. The DOCTOR produces his sonic screwdriver and sets to work.

The CHAMELEON-JENKINS comes into the outer room and sees the DOCTOR at work. Drawing a ray gun from his pocket, he conceals himself behind the connecting door.

The DOCTOR gets the big cupboard open without much difficulty and finds that it contains neatly stacked piles of black and white sheaths. He examines them thoughtfully. Then taking one of each colour he slips them into his left and right hand coat pockets. Closing the cupboard he turns and leaves the room.

He hurries past CHAMELEON-JENKINS without seeing him. CHAMELEON-JENKINS trains his ray gun on the DOCTOR's back - and the outer doors open admitting a worried looking middle-aged lady. As the lady comes in the DOCTOR realises there is someone behind him and turns in time to see CHAMELEON-JENKINS slipping the ray gun back in his pocket.)

DOCTOR: (Before either CHAMELEON-JENKINS or the passenger can speak, hurriedly.) I'm just going off duty, but err this gentleman will be pleased to attend to you.

(And with that he disappears through the outer doors.)


(As the DOCTOR comes back into Air Traffic Control, CHAMELEON-PINTO is examining JEAN.)

CHAMELEON-PINTO: How do you feel now?
JEAN: Not too good.
COMMANDANT: I can't understand it. She's never done this on me before.

(JEAN sees the DOCTOR, who gives her a signal, and stands up.)

JEAN: Thank you Nurse. I feel much better now.
COMMANDANT: Well there couldn't be much wrong then.
CHAMELEON-PINTO: (To JEAN.) Have you had any lunch?
JEAN: No I've been so busy today, I haven't even had any breakfast.
CHAMELEON-PINTO: Then no wonder you didn't feel well. (To the COMMANDANT.) Really Commandant. You must see that your staff have time for regular meals.
COMMANDANT: I've never stopped her having her lunch!
CHAMELEON-PINTO: (Half-believing.) I'm sure, Commandant. But it has been known to happen.

(CHAMELEON-PINTO closes her medical bag and marches out of the room, glaring suspiciously at the DOCTOR, who is staring absorbedly at one of the radar screens. As soon as she is gone, the DOCTOR hurries over to JEAN, who is lying back limply in her chair.)

COMMANDANT: (To JEAN.) Now look here.
DOCTOR: Very well done!

(JEAN sits up, bright and alert again.)

JEAN: Did I give you enough time?
DOCTOR: Ample time.
COMMANDANT: What is all this? You weren't ill at all, were you?
DOCTOR: It's all right, Commandant. She was acting on my instructions.

(He produces the two sheaths.)

COMMANDANT: On your instructions?
DOCTOR: Yes. What do you think of these?

(The COMMANDANT stares at them.)

COMMANDANT: Now, what are these?
DOCTOR: I think there's somebody here who can tell us.

(He looks across to MEADOWS's usual station...)

DOCTOR: Excuse me.

(...but it is occupied by someone else.)

DOCTOR: Where's the chap who usually sits there?
COMMANDANT: Well he's probably off duty. In that case, he'll be back on shift in a couple of hours.
DOCTOR: I see. Oh well, these'll have to wait.


TANNOY: Chameleon Youth Tours announce the departure of their flight number Four-One-Nine to Rome. Will all passengers please assemble in the departure lounge.

(SAMANTHA puts back all the contents of her bag, which have been spread out over the Chameleon Tours counter. ANN DAVIDSON comes up to her.)

ANN DAVIDSON: (To other passengers before SAMANTHA.) Don't forget your postcards. Give them back to me and we'll post them for you when...

(She takes the postcards and turns to SAMANTHA.)

ANN DAVIDSON: Have you found your ticket yet?
SAMANTHA: I don't know. I seem to have lost it somewhere. But you remember me, don't you? I bought it off you.
ANN DAVIDSON: There are so many people... what was the name?


(In the office, SPENCER is watching this on his monitor. SAMANTHA and ANN DAVIDSON can be heard.)

SAMANTHA: Err, Samantha Briggs. Oh, it had S. Briggs on the ticket.

(ANN DAVIDSON studies her list.)

ANN DAVIDSON: S. Briggs has already checked in.
SAMANTHA: Oh no. Well, who the heck... Look, can you remember what she looked like?
ANN DAVIDSON: She? I seem to remember a boy with that ticket.
SAMANTHA: (Bitterly.) Jamie! He's pinched it. Look you have to stop him!
ANN DAVIDSON: I can't hold up the flight.
SAMANTHA: But look.
ANN DAVIDSON: I'm sorry, there's nothing more I can do for you.

(SPENCER picks up the phone and dials through to the front.)


(ANN DAVIDSON picks up the phone.)

ANN DAVIDSON: (Into phone.) Hello. Yes, all right. That's very kind of you.

(She puts down the phone and turns to SAMANTHA.)

ANN DAVIDSON: You're very fortunate. Your ticket's just been found.
SAMANTHA: Oh good. Well who got it?
ANN DAVIDSON: We can't tell you that I'm afraid but our manager would like to see you. He's just through there.

(She points towards the rear of the kiosk.)

SAMANTHA: Oh right, ta.

(SAMANTHA hurries towards the little office. ANN DAVIDSON turns to the passengers.)

ANN DAVIDSON: Now, who's got their postcards ready?


(As she comes in, a man is studying a monitor screen.)

SAMANTHA: Er, you wanted to see me?

(The man at the desk looks up. It is SPENCER, the man who tried to kill her, she realises, and there is a ray gun in his hand.)

SPENCER: Yes, indeed. You won't escape again!


(We see the passengers being led through the concourse and through the gate.)


HESLINGTON: Chameleon Four-One-Nine. Clearance correct.
BLADE: (OOV.) Chameleon Four-One-Nine. Taxi Clearance?
HESLINGTON: Chameleon Four-One-Nine. Taxi following southern taxiway for departure runway two-seven.
BLADE: (OOV.) Roger.

(The COMMANDANT is watching the blip that is Chameleon Flight Four-One-Nine on his radar screen.)

COMMANDANT: Well this time they'll have the RAF on their tail!
DOCTOR: How high can fighters go these days, Commandant?
COMMANDANT: Oh, ten miles plus.
DOCTOR: How futile.


(We see the aeroplane taking off.)


JEAN: RAF Manston, sir.

(The COMMANDANT hurries to the phone.)

COMMANDANT: Oh, good. (Into phone.) Hello, old boy. The Chameleon Rome flight's just taken off. They're on Amber One, at flight level two-one-zero. Right. Good man.


ANN DAVIDSON: You can unfasten your seat belts now. Thank you.

(On board the plane JAMIE is sitting in an aisle seat, struggling to control his rebellious stomach. He is obviously scared at the new sensation of flying. ANN DAVIDSON comes along and dumps a tray of airline food on the table of the seat next to him. She notices his pallor.)

ANN DAVIDSON: Are you all right?
JAMIE: Oh aye, I'll be all right.

(He looks at the cheerful teenager tucking in next to him. It is just too much. A hand to his mouth, JAMIE sprints for the toilets at the rear of the plane.)


(The DOCTOR and the COMMANDANT are standing behind HESLINGTON, studying the blip on his radar screen that represents the Chameleon plane in steady flight. The COMMANDANT points to the screen.)

COMMANDANT: That's the fifty-mile mark they're passing now.
DOCTOR: Normally you... you don't plot them at this range?
COMMANDANT: No, there's too much traffic to control. Once they're up and away on their air corridor, we're finished with them.

(A voice crackles from the speaker.)

VOICE: (OOV.) Hello, Gatwick Airport. This is RAF Two-Four-One. How do you read me?


(We see an RAF fighter while we hear the voices.)

HESLINGTON: Gatwick Airport to RAF Two-Four-One. We read you loud and clear.
VOICE: Have the Chameleon aircraft in sight. Am following at ten thousand feet, heading due south.


(The COMMANDANT points to a smaller blip following the Chameleon one.)

COMMANDANT: That's him. Right on the tail. So far so good!


(On the flight deck of the Chameleon plane everything is ready. ANN DAVIDSON closes and seals the door.)


(Once again BLADE pulls the lever, and once again the crowd of laughing chattering teenagers packing the rows of seats disappears from the monitor screen. ANN DAVIDSON takes the big segmented container from its special compartment and prepares to go back into the main cabin, but BLADE stops her. He has been studying the radar-screen.)

BLADE: Something's following us.
ANN DAVIDSON: Another airliner going the same way?
BLADE: No, it's too small.

(BLADE flicks on a monitor and adjusts it to give a close-up head-on view of the pursuing plane.)

BLADE: It's a fighter. Give me a radar reading.

(ANN DAVIDSON studies the instrument panel beneath the radar screen.)

ANN DAVIDSON: Two-three decimal seven-nine.

(BLADE reaches towards a separate instrument console, adjusts some controls and then presses a firing button.)


(In the cockpit of the fighter, the pilot feels a dazzling beam of light strike him squarely between the eyes. He slumps forward, unconscious. Slowly the fighter begins its long nose-dive into the sea.)


COMMANDANT: Heslington, that fighter's off course!
HESLINGTON: (Into mike.) Gatwick to RAF Two-Four-One. Do you read me?
DOCTOR: That plane isn't just off course. Something's happened to it.
HESLINGTON: You're right. It's out of control. (Into mike.) Gatwick to RAF Two-Four-One. Do you read me?
DOCTOR: (Sadly.) I don't think you'll get a reply.

(He is quite right: the mike remains dead.)

COMMANDANT: It's fading, dropping out of our radar. Jean, get me RAF Manston. That plane's crashed.
HESLINGTON: Look at the Chameleon plane! There's something wrong with that too.
DOCTOR: It's standing still!
COMMANDANT: Impossible.

(HESLINGTON studies the screen.)

HESLINGTON: No sir, the blip's stationary.
COMMANDANT: (Incredulously.) That can only mean one thing... It's crashing too!


(High above them the Chameleon plane is folding its wings into its body. The familiar aeroplane shape suddenly takes on the sleeker lines of a space rocket.)


(On board the plane, the first part of the conversion process is complete. BLADE slides back a panel to reveal a second instrument console and begins preparations for the final stages of the journey. ANN DAVIDSON is moving through the cabin gathering her incredible harvest when the intercom crackles.)

BLADE: (OOV.) Report to the flight deck immediately.

(She goes back to the flight deck and finds BLADE studying a file.)

BLADE: How many people require passports in order to leave the airport on the next flight.
ANN DAVIDSON: Twenty-Five.
BLADE: You missed this one here.
ANN DAVIDSON: (Shaken.) I'm sorry.
BLADE: Carry on.

(Shaken, ANN returns to her duties. She walks back to the main cabin, looking for the next seat to resume the collection. It is an aisle seat, but it is empty. She frowns. Since the seat is empty she assumes that she must have already collected it. She moves on down the plane. The seat about which she was uncertain was JAMIE's.)


(JEAN puts down her phone.)

JEAN: Negative report from Air Sea Rescue, sir.
COMMANDANT: But with two aircraft ditching there must be some signs of wreckage.
DOCTOR: (Gently.) Why do you think the Chameleon plane crashed into the sea?

(The COMMANDANT stares at him.)

COMMANDANT: Because it disappeared off our radar screen!
DOCTOR: But it stood still first!
COMMANDANT: Because it must have collided with the RAF plane and dropped like a stone.
DOCTOR: Why do you think that?

(The COMMANDANT snatches a note pad from his desk and draws a big circle, bisected by a horizontal line.)

COMMANDANT: You see, when a plane on that radar appears to stand still, it is in point of fact dropping straight down.
DOCTOR: What about straight up?
COMMANDANT: (Wearily.) Oh my dear Doctor! To get above our radar umbrella like that it'd have to climb vertically until it was a hundred miles high. The darned thing would be in outer space.
DOCTOR: Exactly!


(As they speak the Chameleon spaceship is streaking upwards, Earth's atmosphere left far behind. Far above in the blackness of deep space there hangs the giant gleaming sphere that is the Chameleon space station. The spaceship speeds towards it. The entry doors slide open and the space craft disappears inside. Flight Four-One-Nine had arrived...)

Next Episode

Doctor Who



Captain Blade


Jean Rock

Inspector Crossland

Samantha Briggs

Nurse Pinto


RAF Pilot

Ann Davidson


Title Music by
and the BBC Radiophonic Workshop

Story Editor

DAPHNE DARE (Credited, but only did costumes for parts 1&2.)
SANDRA REID (Not credited on screen, but did costumes for parts 3-6.)




Film Cameraman

Film Editor




(c) BBC TV

Transcribed by


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