Liz has been captured by Reegan who is holding the three aliens captive. The Doctor suspects Quinlan's part in the conspiracy, but Quinlan is killed before he can reveal the truth.
| Name | Type | Role | |
|---|---|---|---|
| Malcolm Hulke | Writer | ||
| David Whitaker | Writer | ||
| Robert Cawdron | Guest Star | ||
| Michael Ferguson | Director |