Dorzak (Episode)/Credits

Cast

 * Doctor Helena Russell - Barbara Bain
 * Maya - Catherine Schell
 * Tony Verdeschi - Tony Anholt
 * Alan Carter - Nick Tate
 * Dorzak - Lee Montague
 * Sahala - Jill Townsend
 * Yasko - Yasuko Nagazumi
 * Doctor Ed Spencer - Sam Dastor
 * Sam (Ed) Malcolm - Richard Le Parmentier
 * 1st Security Guard - Paul Jericho
 * 2nd Security Guard - John Judd
 * Yesta - Kathryn Leigh Scott
 * Clea - Seretta Wilson

Uncredited

 * Alphan - Jenny Cresswell
 * Security Guard Pierce Quinton - Quentin Pierre
 * Marc Smith - Alien Computer voice

Crew

 * Produced by Gerry Anderson, Fred Freiberger and F. Sherwin Green
 * Music by Derek Wadsworth
 * Cinematography by Brendan J. Stafford (as Brendan Stafford)
 * Film Editing by Ray Lovejoy
 * Casting By Lesley De Pettit (as Lesley de Pettitt)
 * Production Design by Keith Wilson
 * Costume Design by Emma Porteous

Makeup Department

 * Jeanette Freeman (as Jeannette Freeman): Hairdresser
 * Connie Reeve: Makeup artist

Production Management

 * Donald Toms: Production manager

Second Unit Director or Assistant Director

 * Ken Baker: Assistant director
 * David Lane: Second unit director (uncredited)

Art Department

 * Michael Ford: Assistant art director
 * Bill Waldron: Construction manager

Sound Department

 * Roy Baker: Sound supervisor
 * John Brommage: Sound recordist
 * Jack T. Knight: Sound editor
 * Peter Pennell: Sound editor

Special Effects

 * Nick Allder: Llighting cameraman
 * Michael S.E. Downing: Electronics
 * Brian Johnson: Special effects designer / special effects director
 * David LitchfieldC: amera operator
 * Andrew Kelly: Model maker (uncredited)

Visual Effects

 * Martin Bower: Model maker (uncredited)

Camera and Electrical Department

 * George Watts: Focus puller
 * Tony White: Camera operator
 * John May: Gaffer (uncredited)

Costume and Wardrobe Department

 * Eileen Sullivan: Wardrobe

Music Department

 * Alan Willis: Music editor

Script and Continuity Department

 * Doreen Soan: Continuity

Additional Crew

 * Reg Hill: Production executive
 * David Lane: Technical director