 | Tom Baker als The Doctor |
 | Elisabeth Sladen als Sarah Jane Smith |
 | Ian Marter als Harry Sullivan |
 | Kevin Lindsay als Styre / The Marshal |
 | Donald Douglas als Vural |
| Glyn Jones als Krans |
| Peter Walshe als Erak |
| Peter Rutherford als Roth |
| Terry Walsh als Zake |
| Brian Ellis als Prisoner |
| Rodney Bennett | Director |
| Bob Baker | Writer |
| Dave Martin | Writer |
| Dudley Simpson | Original Music Composer |
| Philip Hinchcliffe | Producer |
| Robert Holmes | Script Editor |
| Marion McDougall | Production Assistant |
| Dick Mills | Special Sound Effects |
| John Friedlander | Visual Effects |
| Tony Oxley | Visual Effects |
| Barbara Kidd | Costume Design |
| Sylvia James | Makeup Artist |
| Tommy Thomas | Lighting Director |
| Vic Godrich | Sound |
| Roger Murray-Leach | Production Design |
| Terry Walsh | Fight Choreographer |
