A crew of interplanetary archaeologists is threatened when an alien creature impregnates one of their members, causing her to turn homicidal and murder them one by one.

A British multinational company seeks to overthrow a vicious dictator in central Africa. It hires a band of (largely aged) mercenaries in London and sends them in to save the virtuous but imprisoned opposition leader who is also critically ill and due for execution. Just when the team has performed a perfect rescue, the multinational does a deal with the vicious dictator leaving the mercenary band to escape under their own steam and exact revenge.

When SAS Captain Peter Skellen is thrown out of the service for gross misconduct due to unnecessary violence and bullying, he is soon recruited by The People's Lobby, a fanatical group aiming to hold several US dignitaries hostage. But Skellen's dismissal is a front to enable him to get close to the terrorist group. Can he get close enough to stop the Lobby from creating an international incident?

The Doctor and Romana learn the second segment of the Key to Time is on the planet Calufrax. Yet they arrive on a planet called Zanak, which has been hollowed out and fitted with hyperspace engines, allowing its insane, half-robot Captain to materialise it around smaller planets and plunder their resources.

A 30-minute documentary looking at the writing and production of The Pirate Planet.