George Montgomery as Philip Marlowe

Nancy Guild as Merle Davis

Florence Bates as Mrs. Murdock

Roy Roberts as Lt. Breez

Fritz Kortner as Vannier

Conrad Janis as Leslie Murdock

Marvin Miller as Blair

Reed Hadley as Dr. Moss (uncredited)

Robert Adler as Police Sgt. Spangler (uncredited)

Ben Erway as Shaw (uncredited)

Alfred Linder as Eddie Prue (uncredited)

George Magrill as Policeman (uncredited)

Jack Overman as Apartment Manager (uncredited)

Ray Spiker as Figaro (uncredited)

Houseley Stevenson as Elisha Morningstar (uncredited)

Jack Stoney as Mike - Hood (uncredited)

Gisela Werbisek as Maid (uncredited)

Paul Maxey as Coroner (uncredited)

Joe Palma as Attendant (uncredited)

Edward Gargan as Truck Driver (uncredited)

Al Eben as Baggage Room Attendant (uncredited)