John Loder

Character: Captain Craig Killian

Ruth Ford

Character: Janet Devon

Marian Hall

Character: Patricia 'Pat' Devon

Richard Fraser

Character: Lieutenant Walter Sibley

Paul Cavanagh

Character: Dr. Dorn

Lumsden Hare

Character: General Randall Devon

John Abbott

Character: Dr. Ferris

Mary Field

Character: Nurse Kruger

Rex Williams

Character: Eric - Male Nurse

Joan Winfield

Character: Mrs. Ellen Tanner

Charles Irwin

Character: Inspector Cady

Peggy Carson

Character: Marie Oliver - the Maid

Walter Tetley

Character: Sammy

Creighton Hale

Character: Constable Fletcher

Frank Mayo

Character: Constable Ryan

Vera Lewis

Character: Landlady (uncredited)