The Doctor arrives on a planet where two tribes, the savage Sevateem and the technically brilliant Tesh, are at war. He meets Leela, an exile from the Sevateem, and discovers that the tribes' god of evil is apparently himself...
| Production | Philip Hinchcliffe | Producer |
| Writing | Chris Boucher | Writer |
| Directing | Pennant Roberts | Director |
| Sound | Dudley Simpson | Original Music Composer |
| Writing | Robert Holmes | Script Editor |
| Crew | Dick Mills | Special Sound Effects |
| Camera | John McGlashan | Camera Operator |
| Art | Austin Ruddy | Production Design |
| Sound | Colin Dixon | Sound |
| Crew | Terry Walsh | Stunt Coordinator |
| Editing | Pam Bosworth | Editor |
| Costume & Make-Up | Ann Ailes-Stevenson | Makeup Artist |
| Costume & Make-Up | John Bloomfield | Costume Design |
| Lighting | Derek Slee | Lighting Director |
| Visual Effects | Mat Irvine | Visual Effects Designer |
| Production | Marion McDougall | Production Assistant |
| Editing | Tariq Anwar | Editor |
