Cast
James Donald
Michael Heathley
Noel Willman
Dr. Dennis Bord
Herbert Lom
Dr. Alex Leon
Walter Fitzgerald
Sir Charles Craddock
Muriel Pavlow
Caroline Cartier
Marianne Stone
Maisie
Hartley Power
General Adams (uncredited)
Johnnie Schofield
Jim Barnes (uncredited)
Phyllis Calvert
Lydia Heathley
Robert Beatty
Maj. Sam Seagram
Patric Doonan
Brian Jackson
Herbert Lomas
George Jackson
Stanley Maxted
Prof. Adams
Philip Ray
Sentry (uncredited)
Maurice Denham
Prof. Carrington
Marjorie Fielding
Michael's Mother
Cyril Chamberlain
Inspector Carter
Hal Osmond
Agent Lawson