Calificación
Reparto

Howard Duff
Dr. Stephen Mitchell

Eva Bartok
Dr. Lisa Frank

Alan Wheatley
Dr. Smith

Philip Leaver
Professor Koepler

Michael Medwin
Dr. Toby Andrews

Andrew Osborn
Dr. Philip Crenshaw

Cecile Chevreau
Vanessa Mitchell

Anthony Ireland
General Hayes

Hugh Moxey
Colonel Alfred Daniels

David Horne
Minister

Leo Phillips
Sergeant Peterson (uncredited)

Marianne Stone
Mrs. Rogers (uncredited)

Jean Webster-Brough
Mrs. Daniels (uncredited)