| Episode | Credits | Transcript |
Cast[]
- Commander John Koenig - Martin Landau
- Doctor Helena Russell - Barbara Bain
- Professor Victor Bergman - Barry Morse
- Paul Morrow/Triton voice - Prentis Hancock
- Alan - Nick Tate
- CarterSandra Benes - Zienia Merton
- David Kano - Clifton Jones
- Doctor Bob Mathias - Anton Phillips
- Ted Clifford - Max Faulkner
- Tanya Aleksandr - Suzanne Roquette
- Main Mission Operatives - Robert Phillips, Michael Stevens and Andy Dempsey
- Alphan - Alan Harris
- Donovan
- Security Guard Astronaut 0 - Tony Allyn
- Security Guard Astronaut 6 - Quentin Pierre
- Medical Orderly Astronaut 4 - Christopher Williams[1]
Crew[]
- Directed by Ray Austin
- Written by Edward di Lorenzo
- Produced by Gerry Anderson and Sylvia Anderson
- Music by Barry Gray
- Cinematography by Frank Watts
- Film Editing by Derek Chambers (Credited as Derek Hyde Chambers)
- Casting By Michael Barnes
- Production Design by Keith Wilson
Makeup Department[]
- Helene Bevan: Hair designer
- Basil Newall: Makeup artist
Second Unit Director or Assistant Director[]
- Ken Baker: Assistant director
Art Department[]
- Bill Beavis: Scenic artist (uncredited)
- John Chisholm: Props (uncredited)
Sound Department[]
- David Bowen: Sound recordist
- Roy Lafbery: Sound editor
Special Effects[]
- Nick Allder: Special effects director
- Michael S.E. Downing: Electronics
- Frank Drake: Camera operator
- Brian Johnson: Special effects
- Harry Oakes: Lighting cameraman
- Andrew Kelly: Model maker (uncredited)
Stunts[]
- Rick Lester: Stunt double for Martin Landau (uncredited)
Camera and Electrical Department[]
- Neil Binney: Camera operator
Costume and Wardrobe Department[]
- Rudi Gernreich: Costumes: moon city
- Eileen Sullivan: Wardrobe
Music Department[]
- Vic Elms: Associate
- Alan Willis: Music editor
Script and Continuity Department[]
- Johnny Byrne: Script editor
- Gladys Goldsmith: Continuity
Transportation Department[]
- Ray Atkins: Driver (uncredited)
- Steve Smith: Driver (uncredited)
- Doug Wetherley: Driver (uncredited)
Additional Crew[]
- Ron Fry: Production manager
- David Lane: Supervising editor (Credited as Dave Lane)
- Christopher Penfold: Story consultant
- Jeremy Coote: Runner (uncredited)[2]