Katy Manning

The Master forms an uneasy alliance with the Doctor so that between them they can subdue the Keller Machine which is now out of control.

The Interplanetary Mining Corporation, represented by Captain Dent, arrives on the planet claiming that the colonists have no right to be there.

Old friends fight together - but is it too late to stop the sinister Shansheeth?

The Doctor leads a mission to the Ogron home world to apprehend the Master and rescue Jo. But the Master is in league with some old enemies of the Doctor.

The Master is behind the Keller Machine and uses it to recruit the rioting inmates at Stangmoor Prison. He plans to capture a missile and fire it at the World Peace Conference.

Sir Reginald Styles, a diplomat with the best chance of averting a war between Russia and China, is almost killed by a mysterious guerrilla.The fighter then disappears with Jo and the Doctor - into a terrifying future Earth ruled by Daleks.