Philip Marlowe
Helen Grayle
Ann Grayle
Jules Amthor
Joe "Moose" Malloy
Leuwen Grayle
Lindsay Marriott
Police Lt. Randall
Dr. Sonderborg
Jesse Florian
Bartender at "Florian's" (uncredited)
Dancer at the "Cocoanut Beach Club" (uncredited)
Detective (uncredited)
Club Patron (uncredited)
Dr. Sonderborg's Assistant (uncredited)
Police Clerk (uncredited)
Detective (uncredited)
Headwaiter (uncredited)
Club Patron (uncredited)
Man (uncredited)
Man (uncredited)
Boy Getting Laundry (uncredited)
Amthor's Chauffeur (uncredited)
Girl in Bar (uncredited)
Taxi Driver (uncredited)
Club Patron (uncredited)
Detective Nulty (uncredited)
New Boss at "Florian's" (uncredited)
Elevator Operator (uncredited)
Grayle's Butler (uncredited)