John Loder
— Captain Craig Killian
Ruth Ford
— Janet Devon
Marian Hall
— Patricia 'Pat' Devon
Richard Fraser
— Lieutenant Walter Sibley
Paul Cavanagh
— Dr. Dorn
Lumsden Hare
— General Randall Devon
John Abbott
— Dr. Ferris
Mary Field
— Nurse Kruger
Rex Williams
— Eric - Male Nurse
Joan Winfield
— Mrs. Ellen Tanner
Charles Irwin
— Inspector Cady
Peggy Carson
— Marie Oliver - the Maid
Walter Tetley
— Sammy
Creighton Hale
— Constable Fletcher
Frank Mayo
— Constable Ryan
Vera Lewis
— Landlady (uncredited)