Blake and some criminals attempt to seize control of the prison ship london as it passess a space war where an abandoned ship is found.
| Name | Type | Role | |
|---|---|---|---|
| Terry Nation | Writer | ||
| Tom Kelly | Guest Star | ||
| Norman Tipton | Guest Star | ||
| Brett Forrest | Guest Star | ||
| Bill Weston | Guest Star | ||
| David Hayward | Guest Star | ||
| Michael MacKenzie | Guest Star | ||
| Glyn Owen | Guest Star | ||
| Leslie Schofield | Guest Star | ||
| Pennant Roberts | Director |