| Episode | Credits | Transcript |
Cast[]
- Martin Landau as Commander John Koenig
- Barbara Bain as Doctor Helena Russell (flashback only)
- Hildegarde Neil as Elizia
- Roy Marsden as Crael
- John Hug as Bill Fraser
- Alibe Parsons as Alibe
- Sam Dastor as Doctor Ed Spencer
- Michael Dickinson as Blake Maine
- Dora Reisser as Interrogator
- Cassandra Harris as Sares
- Angus MacInnes as Jelto
- Arthur White as Kinano
- Robert Reeves as Command Center Operative Peter Reeves
- Jenny Cresswell as Alphan
- Katya Wyeth, Vida Taylor, Vilna Riley, Beulah Hughes, Felicity York and Rikki Howard as Other Guards
- Peter Brayham as Garth
- Geoffrey Greenhill as Phirly
- Del Baker as Hunted man
- Alan Harris as Entra prisoner[1]
Crew[]
- Produced by Gerry Anderson, Fred Freiberger and F. Sherwin Green
- Music By Derek Wadsworth
- Cinematography By Frank Watts
- Film Editing By Alan Killick
- Casting By Lesley De Pettit (Credited as Lesley De Pettitt)
- Production Design By Keith Wilson
- Costume Design By Emma Porteous
- Hairdresser: Mike Lockey (Credited as Michael Lockey)
- Makeup Artist: Basil Newall
- Production Manager: Donald Toms
- Assistant Director: Robert Lynn
- Second Unit Director: David Lane
- Assistant Art Director: Michael Ford
- Construction Manager: Bill Waldron
- Sound Supervisor: Roy Baker
- Sound Editors: Jack T. Knight and Peter Pennell
- Sound Recordist: Brian Marshall