Howard Duff
Dr. Stephen Mitchell
Acting
Eva Bartok
Dr. Lisa Frank
Acting
Alan Wheatley
Dr. Smith
Acting
Philip Leaver
Professor Koepler
Acting
Michael Medwin
Dr. Toby Andrews
Acting
Andrew Osborn
Dr. Philip Crenshaw
Acting
Cecile Chevreau
Vanessa Mitchell
Acting
Anthony Ireland
General Hayes
Acting
Hugh Moxey
Colonel Alfred Daniels
Acting
David Horne
Minister
Acting
Leo Phillips
Sergeant Peterson (uncredited)
Acting
Marianne Stone
Mrs. Rogers (uncredited)
Acting
Jean Webster-Brough
Mrs. Daniels (uncredited)
Acting