Morbius lives once more, but as a rampaging beast. The Doctor is forced to ally with Dr. Solon to bring him to heel, but the two disagree about what should happen to Morbius.
| Name | Type | Role | |
|---|---|---|---|
| Terrance Dicks | Writer | ||
| Robert Holmes | Writer | ||
| Robin Bland | Writer | ||
| Colin Fay | Guest Star | ||
| Gilly Brown | Guest Star | ||
| Cynthia Grenville | Guest Star | ||
| Janie Kellis | Guest Star | ||
| Sue Bishop | Guest Star | ||
| Stuart Fell | Guest Star | ||
| Gabrielle Mowbray | Guest Star | ||
| Philip Madoc | Guest Star | ||
| Veronica Ridge | Guest Star | ||
| Michael Spice | Guest Star | ||
| Christopher Barry | Director |