Katy Manning

A captive of the guerrillas, the Doctor discovers they intend to change history. Jo is transported to the 22nd Century where she unwittingly gives vital information to the Daleks.

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.

The Controller betrays the Daleks and is exterminated. The Daleks travel back in time to the 20th Century to ensure that the peace conference fails.

The Keller Machine breaks free of the Doctor’s restraining device and the Doctor has no choice but to turn the parasite against the Master.

The Master arrives, posing as an adjudicator from Earth who has come to settle the dispute between the colonists and the miners. However, the Master has an agenda of his own.

On Draconia, the Doctor reveals the Master’s plan to provoke war to the Draconian Emperor. But the Master escapes, taking Jo as hostage.