The invasion begins as Auton shop dummies come to life and attack the public. The Doctor and UNIT infiltrate Auto Plastics where the Doctor faces the Nestene consciousness.
| Name | Type | Role | |
|---|---|---|---|
| Robert Holmes | Writer | ||
| Hugh Burden | Guest Star | ||
| Edmund Bailey | Guest Star | ||
| John Breslin | Guest Star | ||
| Hamilton Dyce | Guest Star | ||
| Derek Martinus | Director |