The Rani, at last, links the Doctor into her great brain machine, the crowning jewel in her component packet of geniuses brought together to turn Lakertya itself into one vast cerebral mass capable of redirecting time anywhere in the universe, giving her absolute power over all creation.
| Name | Type | Role | |
|---|---|---|---|
| Jane Baker | Writer | ||
| Pip Baker | Writer | ||
| Jacki Webb | Guest Star | ||
| Peter Tuddenham | Guest Star | ||
| Richard Gauntlett | Guest Star | ||
| Mark Greenstreet | Guest Star | ||
| Andrew Morgan | Director |