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...
| Directing | Pennant Roberts | Director |
| Writing | Chris Boucher | Writer |
| Production | Philip Hinchcliffe | Producer |
| Writing | Robert Holmes | Script Editor |
| Sound | Dudley Simpson | Original Music Composer |
| Lighting | Derek Slee | Lighting Director |
| Sound | Colin Dixon | Sound |
| Camera | John McGlashan | Camera Operator |
| Editing | Pam Bosworth | Editor |
| Crew | Dick Mills | Special Sound Effects |
| Costume & Make-Up | John Bloomfield | Costume Design |
| Costume & Make-Up | Ann Ailes-Stevenson | Makeup Artist |
| Art | Austin Ruddy | Production Design |
| Crew | Terry Walsh | Stunt Coordinator |
| Production | Marion McDougall | Production Assistant |
| Visual Effects | Mat Irvine | Visual Effects Designer |
| Editing | Tariq Anwar | Editor |
