Susan Peters
— Susan Evans
Herbert Marshall
— Prof. Michael Kingsley
Mary Astor
— Josephine Evans
Elliott Reid
— Jeff Evans
Richard Carlson
— Tom Farrell
Allyn Joslyn
— Adam Trent
Dorothy Morris
— Co-ed
Frances Rafferty
— Co-ed
George Dolenz
— Pepe
Emory Parnell
— Judge Canute J. Kelly
Grady Sutton
— Undetermined Minor Role (unconfirmed)
Frank Faylen
— Reporter (uncredited)
Ava Gardner
— Co-ed (uncredited)
Noel Neill
— Co-ed (uncredited)
Charles Arnt
— Station Master (uncredited)
William Bishop
— French Lieutenant (uncredited)
Paul E. Burns
— Gardener-Caretaker (uncredited)
Lois Collier
— Co-ed (uncredited)