The scientist Belkov has stripped a planet of a valuable crystalline substance and tries to double cross both Servalan and the Scorpio crew in an attempt to escape with the private stash he has collected. He is aided by his computer, an amalgamation of a standard Federation computer and a pleasure planet gaming machine.
| Name | Type | Role | |
|---|---|---|---|
| Bill Lyons | Writer | ||
| Stratford Johns | Guest Star | ||
| James Harvey | Guest Star | ||
| Rosalind Bailey | Guest Star | ||
| David Neal | Guest Star | ||
| Vivienne Cozens | Director |