The Doctor attempts to return the scientists to their own time, before Linx tries to use his spaceship and destroys the entire castle.
| Name | Type | Role | |
|---|---|---|---|
| Robert Holmes | Writer | ||
| Bella Emberg | Guest Star | ||
| Donald Pelmear | Guest Star | ||
| John J. Carney | Guest Star | ||
| June Brown | Guest Star | ||
| Sheila Fay | Guest Star | ||
| Alan Bromley | Director |