Frontier in Space: Episode Three is an episode of Doctor Who starring Jon Pertwee, Katy Manning, and Roger Delgado. The Doctor is sentenced to life imprisonment at a lunar penal colony while Jo encounters an old enemy.
Runtime: 50 minutes
Genre: Adventure, Drama, Family, Sci-Fi
Stars: Jon Pertwee, Katy Manning, Roger Delgado, Vera Fusek
Director: Paul Bernard, Malcolm Hulke, Sydney Newman