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 | ||
| Harold Goldblatt | Guest Star | ||
| Bill Wilde | Guest Star | ||
| Dennis Bowen | Guest Star | ||
| Paul Bernard | Director |