The Master rescues the Doctor from the lunar penal colony, aiming to take him and Jo to the Ogrons' planet, and the Doctor's attempt to escape leaves him stranded in space.
| Name | Type | Role | |
|---|---|---|---|
| Malcolm Hulke | Writer | ||
| Dennis Bowen | Guest Star | ||
| Harold Goldblatt | Guest Star | ||
| Bill Wilde | Guest Star | ||
| Paul Bernard | Director |