The first of two feature films starring with Roy Castle, Jennie Linden, Roberta Tovey

An accident sends the Tardis with the Doctor and his companions to a strange planet ravaged by radiation and dominated by the monstrous Daleks. There they join forces with the Thais, a gentle people who the Daleks want to exterminate, in a pitched battle for survival....

Screenplay by Milton Subotsky

From the BBC television serial by Terry Nation

Produced by Milton Subotsky and Max J. Rosenberg

Directed by Gordon Flemyng