Impersonating Salamander, the Doctor infiltrates the research centre, but Benik becomes suspicious. Underground, Salamander's deception is discovered. Vintage sci-fi taking us on adventures in time and space, reflecting the broadcast standards and attitudes of its time.
| Name | Type | Role | |
|---|---|---|---|
| David Whitaker | Writer | ||
| Dibbs Mather | Guest Star | ||
| William McGuirk | Guest Star | ||
| Elliott Cairnes | Guest Star | ||
| Adam Verney | Guest Star | ||
| Margaret Hickey | Guest Star | ||
| Barry Letts | Director |