Edward DmytrykDirector
Dick PowellPhilip Marlowe
Claire TrevorHelen Grayle
Anne ShirleyAnn Grayle
Otto KrugerJules Amthor
Mike MazurkiMoose Malloy
Miles ManderMr. Grayle
Douglas WaltonLindsay Marriott
Don DouglasPolice Lieutenant Randall
Ralf HaroldeDr. Sonderborg
Esther HowardJessie Florian
John IndrisanoChauffeur (uncredited)
Jack CarrDr. Sonderborg's Assistant (uncredited)
Shimen RuskinElevator Operator (uncredited)
Ernie AdamsBartender at 'Florian's' (uncredited)
Dewey RobinsonNew Boss at 'Florian's' (uncredited)
Larry WheatGrayle's Butler (uncredited)
Sam FinnHeadwaiter (uncredited)