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