Philip Marlowe
Mavis Wald
Lt. Christy French
Dolores Gonzáles
Orfamay Quest
Mr. Cromwell
Sonny Steelgrave
Grant W. Hicks
Chuck
Winslow Wong
Fred Beifus
YMCA Clerk
Oliver Hady
Julie
Dr. Vincent Lagardie
Orrin Quest
Gumpshaw
Munsey (uncredited)
Strongarm Man (uncredited)
Nurse (uncredited)