Barbara Stanwyck
— Karen Duncan
David Niven
— Doctor Anthony Stanton
Richard Conte
— Paul Clermont
Gilbert Roland
— Croupier
Joan Lorring
— Celestine
Lenore Aubert
— Yvonne Dupré
Maria Palmer
— Huberta
Natalie Schafer
— Dora Shelton
Edward Ashley
— Richard Shelton
Richard Hale
— Professor Linnaker
Mary Field
— Nurse (uncredited)
John Indrisano
— Party Guest (uncredited)
Manuel París
— Baccarat Dealer (uncredited)
Dick Gordon
— Party Guest (uncredited)