The crew search for a new home base on the planet Obsidian, whose volcanic outbursts -- and a nuclear device buried in the planet's core by its inhabitants -- protect the planet from being overtaken. Servalan employs an elaborate plan to take control of the Liberator.
| Name | Type | Role | |
|---|---|---|---|
| Allan Prior | Writer | ||
| Michael Gough | Guest Star | ||
| Ben Howard | Guest Star | ||
| Ben Howard | Guest Star | ||
| Desmond McCarthy | Director |