| Episode | Credits | Transcript |
Cast[]
- Martin Landau as Commander John Koenig
- Barbara Bain as Doctor Helena Russell
- Barry Morse as Professor Victor Bergman
- Ian McShane as Anton Zoref
- Gay Hamilton as Eva Zoref
- Prentis Hancock as Paul Morrow
- Nick Tate as Alan Carter
- Zienia Merton as Sandra Benes
- Clifton Jones as David Kano
- Anton Phillips as Doctor Bob Mathias
- John Hamill as Mark Dominix
- Eva Rueber-Staier as Jane (Solarium Girl)
- Suzanne Roquette as Tanya Aleksandr
- June Bolton as Operative June
- Sarah Bullen as Main Mission Operative Kate Bullen
- Andy Dempsey, Raymond Harris, Robert Phillips, John Clifford and Maggie Wright as Main Mission Operatives
- Loftus Burton as Main Mission Operative Lee Oswald
- Alan Harris as Alphan
- Barbara Kelly as Moonbase Alpha Computer voice
- Lea Dregorn as Hilary Preston
- Tony Allyn as Tony Allan
- Quentin Pierre as Pierce Quinton
- Vincent Wong as Toshiro Fujita
- Maureen Tan as Nurse
- Mike Stevens as Alphan in corridor
Selected Crew[]
- Casting by Michael Barnes
- Production Design by Keith Wilson
- Costume Design by Rudi Gernreich
- Makeup Department
- Helene Bevan - Hair stylist
- Basil Newall - Makeup artist
- Production Management
- Art Department
- John Chisholm - Props
- Bill Beavis - Scenic Artist (Uncredited)
- Sound Department
- David Bowen - Sound Recordist
- Peter Pennell - Sound Editor
- Special Effects By Nick Allder
- Michael S.E. Downing - Electronics
- Frank Drake - Camera Operator
- Brian Johnson - Special Effects
- Harry Oakes - Lighting Cameraman
- Camera And Electrical Department
- Neil Binney - Camera Operator
- Costume And Wardrobe Department
- Rudi Gernreich - Costumes: Moon City
- Editorial Department
- David Lane - Supervising Editor (As Dave Lane)
- Music Department
- Vic Elms - Associate
- Alan Willis - Music Editor
- Other Crew
- Gladys Goldsmith - Continuity
- Christopher Penfold - Story Consultant