The Doctor and Sarah Jane answer an intergalactic distress call that takes them to a far-flung planet, Zeta Minor, at the edge or the known universe. Arriving at the same time as a rescue team, they search for survivors of an earlier expedition. But will anyone be allowed to leave the planet alive?
Tom Baker | Doctor Who | |
William Hartnell | Dr. Who | |
Jon Pertwee | Doctor Who | |
Patrick Troughton | Dr. Who | |
Frazer Hines | Jamie | |
Nicholas Courtney | Brigadier Lethbridge Stewart | |
Pat Gorman | Guard | |
Elisabeth Sladen | Sarah Jane Smith | |
Jacqueline Hill | Barbara Wright | |
William Russell | Ian Chesterton | |
Katy Manning | Jo Grant | |
John Scott Martin | Dalek | |
John Levene | Sergeant Benton | |
Peter Davison | The Doctor | |
Janet Fielding | Tegan | |
John Leeson | K9 | |
Terry Walsh | Primitive | |
Gerald Taylor | Dalek | |
Robert Jewell | Dalek | |
Carole Ann Ford | Susan Foreman | |
Peter Hawkins | Dalek Voices | |
Cy Town | Dalek Operator | |
Roy Skelton | Daleks | |
Wendy Padbury | Zoe | |
Sarah Sutton | Nyssa |