Missing Link/Credits

Episode Cast

 * Martin Landau as Commander John Koenig
 * Barbara Bain as Dr. Helena Russell
 * Barry Morse as Prof. Victor Bergman
 * Joanna Dunham as Vana
 * Peter Cushing as Raan
 * Prentis Hancock as Paul Morrow
 * Clifton Jones as David Kano
 * Zienia Merton as Sandra Benes
 * Anton Phillips as Dr. Mathias
 * Nick Tate as Alan Carter

Uncredited

 * Tony Allyn as Security Guard
 * Emily Bolton as Operative June
 * Andy Dempsey, Alan Harris, Joy Harrison and Robert Phillips as Main Mission Operatives
 * Suzanne Roquette as Tanya Aleksandr

Episode Crew

 * Directed by Ray Austin
 * Screenplay by Edward di Lorenzo
 * Produced by Gerry Anderson (Executive producer) and Sylvia Anderson (Producer)
 * Original Music by Barry Gray
 * Cinematography by Frank Watts (Director of photography)
 * Film Editing by Mike Campbell
 * Casting by Michael Barnes
 * Production Design by Keith Wilson

Makeup Department

 * Helene Bevan (Hair designer)
 * Ann Cotton (Makeup artist)

Art Department

 * Bill Beavis (Scenic artist - uncredited)
 * John Chisholm (Props - uncredited)

Sound Department

 * David Bowen (Sound recordist)
 * Peter Pennell (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)

Costume and Wardrobe Department

 * Rudi Gernreich (Costumes: moon city)
 * Eileen Sullivan (Wardrobe)

Music Department

 * Vic Elms (Associate)
 * Alan Willis (Music editor)

Transportation Department

 * Ray Atkins, Steve Smith and Doug Wetherley (drivers - uncredited)

Other crew

 * Ken Baker (Assistant director)
 * Ron Fry (Production manager)
 * Neil Binney (Camera operator)
 * David Lane (Supervising editor)
 * Johnny Byrne (Script editor)
 * Gladys Goldsmith (Continuity)
 * Christopher Penfold (Story consultant)
 * Jeremy Coote (Runner - uncredited)