The planet Androzani Minor, the distant future. In the planets' caves war rages between government troops and the android warriors of the mysterious Sharaz Jek. But what makes spectrox, the substance they battle to control, so valuable? And how far will the Doctor go to protect his companion?
| Name | Type | Role | |
|---|---|---|---|
| Robert Holmes | Writer | ||
| Maurice Roëves | Guest Star | ||
| Barbara Kinghorn | Guest Star | ||
| Martin Cochrane | Guest Star | ||
| David Neal | Guest Star | ||
| Roy Holder | Guest Star | ||
| Christopher Gable | Guest Star | ||
| Robert Glenister | Guest Star | ||
| Graeme Harper | Director |