Sam Seeley has found one of the meteorites but the Autons want it back and are closing in. General Scobie visits Auto Plastics,
| Name | Type | Role | |
|---|---|---|---|
| Robert Holmes | Writer | ||
| John Breslin | Guest Star | ||
| Clifford Cox | Guest Star | ||
| Hamilton Dyce | Guest Star | ||
| Betty Bowden | Guest Star | ||
| Hugh Burden | Guest Star | ||
| Neil Wilson | Guest Star | ||
| Derek Smee | Guest Star | ||
| Derek Martinus | Director |