The Doctor and Romana learn the second segment of the Key to Time is on the planet Calufrax. Yet they arrive on a planet called Zanak, which has been hollowed out and fitted with hyperspace engines, allowing its insane, half-robot Captain to materialise it around smaller planets and plunder their resources.
Full Cast of Doctor Who: The Pirate Planet
John Leeson
K-9 (voice)
Crew of Doctor Who: The Pirate Planet
Full backstage crew list →- Released October 21, 1978