Dick Powell

Philip Marlowe

Claire Trevor

Helen Grayle

Anne Shirley

Ann Grayle

Otto Kruger

Jules Amthor

Mike Mazurki

Joe "Moose" Malloy

Miles Mander

Leuwen Grayle

Douglas Walton

Lindsay Marriott

Donald Douglas

Police Lt. Randall

Ralf Harolde

Dr. Sonderborg

Esther Howard

Jesse Florian

Ernie Adams

Bartender at "Florian's" (uncredited)

Bernice Ahi

Dancer at the "Cocoanut Beach Club" (uncredited)

George Anderson

Detective (uncredited)

Edward Biby

Club Patron (uncredited)

Jack Carr

Dr. Sonderborg's Assistant (uncredited)