After the TARDIS collides with a spacecraft delivering human tributes to the evil bull-like Nimon, the Doctor and Romana must stop the fearsome alien's quest to rule the galaxy.
| Directing | Kenny McBain | Director |
| Production | Graham Williams | Producer |
| Writing | Anthony Read | Writer |
| Sound | Dudley Simpson | Original Music Composer |
| Writing | Douglas Adams | Script Editor |
| Costume & Make-Up | June Hudson | Costume Design |
| Art | Graeme Story | Production Design |
| Visual Effects | Dave Jervis | Visual Effects |
| Costume & Make-Up | Christine Walmesley-Cotham | Makeup Artist |
| Production | Henry Foster | Production Assistant |
| Camera | Alec Wheal | Camera Operator |
| Crew | Dick Mills | Special Sound Effects |
| Lighting | Nigel Wright | Lighting Director |
| Sound | John Hartshorn | Sound |
| Editing | Rod Waldron | Editor |
| Visual Effects | Peter Pegrum | Visual Effects Designer |
