- [first lines]
- Ann Davidson: All set.
- Blade: Good.
- [to Inspector Crossland]
- Blade: You wanted to know the secret of Chameleon Tours. Well Inspector, see for yourself!
- [last lines]
- Jean Rock: Negative report from Air Sea Rescue, Sir.
- Commandant: But with two aircraft ditching there must be some signs of wreckage.
- Dr. Who: [gently] Why do you think the Chameleon plane crashed into the sea?
- Commandant: Because it disappeared off our radar screen!
- Dr. Who: But it stood still first!
- Commandant: Because it must have collided with the RAF plane and dropped like a stone.
- Dr. Who: Why do you think that?
- Commandant: [snatches a note pad from his desk and draws a big circle, bisected by a horizontal line] You see, when a plane on that radar appears to stand still, it is in point of fact dropping straight down.
- Dr. Who: 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.
- Dr. Who: Exactly!