Dr. Mike Vernon
Edward Judd
Leader of the Lystrians
Yoko Tani
Jean Lodge
Ann Martin
Tony Wall
Peter Thomas
Mark Kingston
Emrys Leyshon
Leonard Cracknell
Stephanie Bidmead
Norman Mitchell
Peter Sinclair
Dr. Claire Harland
Valerie Gearon
Diane Aubrey
Dundy
John Tate
Brian Carter
Lyndon Brook
The Lystrian
Ric Young
Nurse Lim
Tsai Chin
Major Muncaster
Barrie Ingham
Lawrence Blackburn
Anthony Sharp
Police Sergeant Draycott
Glyn Houston
Ann Castle
Director
Alan Bridges
Story
Robert Holmes
Screenplay
Roger Marshall
Costume Design
Eileen Welch
Makeup Artist
Benny Royston
Special Effects
Stan Shields
Ronnie Whitehouse
Casting
Ronnie Curtis
Editor
Derek Holding
Art Direction
Scott MacGregor
Jack Kine
Producer
Jack Greenwood
Camera Operator
Peter Allwork
Director of Photography
James Wilson
Sound Editor
Roy Norman
Brian Blamey
Hairstylist
Jean Bear
Original Music Composer
Bernard Ebbinghouse
Sound Recordist
Red Law