The Doctor discovers a starship trapped in a time warp over Earth. Meanwhile, public schoolboy - and secret alien émigré, Turlough, learns he can have that which he most desires, in return for the murder of the Doctor...
| Name | Type | Role | |
|---|---|---|---|
| Peter Grimwade | Writer | ||
| Sheila Gill | Guest Star | ||
| Roger Hammond | Guest Star | ||
| Stephen Garlick | Guest Star | ||
| Peter Moffatt | Director |