演职人员
Michael Heathley
詹姆斯·唐纳德
Lydia Heathley
Phyllis Calvert
Dr. Dennis Bord
Noel Willman
Dr. Alex Leon
赫伯特·洛姆
Maj. Sam Seagram
罗伯特·比蒂
Brian Jackson
Patric Doonan
Sir Charles Craddock
Walter Fitzgerald
Caroline Cartier
Muriel Pavlow
Prof. Carrington
Maurice Denham
Michael's Mother
Marjorie Fielding
George Jackson
Herbert Lomas
Fisher
Geoffrey Denton
Inspector Carter
Cyril Chamberlain
Agent Lawson
Hal Osmond
Dr. Ferguson
Caven Watson
Maisie
Marianne Stone
Prof. Adams
Stanley Maxted
General Adams (uncredited)
哈特利·鲍尔
Sentry (uncredited)
Philip Ray
Jim Barnes (uncredited)
Johnnie Schofield
Ted (uncredited)
John Warren