Trailer
Images
 | Tom Baker as The Doctor |
 | Mary Tamm as Romana |
 | John Leeson as K-9 (voice) |
 | John Woodvine as Marshal |
 | Lalla Ward as Princess Astra |
 | Davyd Harries as Shapp |
 | Ian Saynor as Merak |
| Ian Liston as 'Hero' |
 | Susan Skipper as 'Heroine' |
 | John Cannon as Guard |
| Iain Armstrong as Technician |
 | Pat Gorman as Pilot |
| Harry Fielder as Guard |
 | William Squire as The Shadow |
 | Barry Jackson as Drax |
 | Valentine Dyall as The Black Guardian |
| Directing | |
| Michael Hayes | Director |
Writing | |
| Bob Baker | Writer |
| Dave Martin | Writer |
Production | |
| Graham Williams | Producer |
Writing | |
| Anthony Read | Script Editor |
| Douglas Adams | Script Editor |
Production | |
| David Maloney | Producer |
Sound | |
| Dudley Simpson | Original Music Composer |
| Delia Derbyshire | Theme Song Performance |
