The Doctor, Ian, Barbara, and Susan land on a spaceship orbiting a distant and mysterious world, where a human crew lies frozen somewhere between life and death. The planet is the Sense-Sphere, home of the Sensorites, beings of immense intelligence and power. Unable to leave, the Doctor and his companions must deduce the Sensorites' intentions: are they friendly, hostile, or frightened? And what is the deadly secret at the heart of the Sense-Sphere?
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 |