Guy Rolfe
Dr. Mark Fenton
Lisa Daniely
Lisa Durand
Patricia Dainton
Sister Rogers
Sydney Tafler
Wade
Ballard Berkeley
Inspector Austin
Anton Diffring
Edward Shroder
Brian Worth
Geoffrey Terry
Avice Landone
Mrs. Terry
Eric Berry
Col. Williams
James Raglan
Sir Oliver Peters
Alexis Chesnakov
Ship's Captain
Michael Golden
Harrison
Edward Dentith
Sergeant Lewis
William Franklyn
Dr. Gillespie
Desmond Llewelyn
Police Constable at Barrier