The Liberator runs into a web created by psionic means; the crew meets the race of genetically-engineered Decimas. Blake learns of the attempt at genocide being waged against the Decimas by the creator of the Web.
| Name | Type | Role | |
|---|---|---|---|
| Terry Nation | Writer | ||
| Molly Tweedley | Guest Star | ||
| Richard Beale | Guest Star | ||
| Willie Sheara | Guest Star | ||
| Ania Marson | Guest Star | ||
| Miles Fothergill | Guest Star | ||
| Gilda Cohen | Guest Star | ||
| Deep Roy | Guest Star | ||
| Ismet Hassam | Guest Star | ||
| Marcus Powell | Guest Star | ||
| Michael E. Briant | Director |