The Doctor is rescued from Finch by the Brigadier and Benton and tries to persuade them to stop Grover before millions of people are erased from history.
| Name | Type | Role | |
|---|---|---|---|
| Malcolm Hulke | Writer | ||
| Brian Badcoe | Guest Star | ||
| Colin Bell | Guest Star | ||
| Timothy Craven | Guest Star | ||
| Terence Wilton | Guest Star | ||
| Paddy Russell | Director |