 | Dick Powell als Philip Marlowe |
 | Claire Trevor als Helen Grayle |
 | Anne Shirley als Ann Grayle |
 | Otto Kruger als Jules Amthor |
 | Mike Mazurki als Joe "Moose" Malloy |
 | Miles Mander als Leuwen Grayle |
 | Douglas Walton als Lindsay Marriott |
 | Donald Douglas als Police Lt. Randall |
 | Ralf Harolde als Dr. Sonderborg |
 | Esther Howard als Jesse Florian |
 | Ernie Adams als Bartender at "Florian's" (uncredited) |
 | George Anderson als Detective (uncredited) |
 | Edward Biby als Club Patron (uncredited) |
| Jack Carr als Dr. Sonderborg's Assistant (uncredited) |
| Tom Coleman als Police Clerk (uncredited) |
 | Ralph Dunn als Detective (uncredited) |
| Sam Finn als Headwaiter (uncredited) |
| Rudy Germane als Club Patron (uncredited) |
 | Fred Graham als Man (uncredited) |
| Bill Hamilton als Man (uncredited) |
| Paul Hilton als Boy Getting Laundry (uncredited) |
| John Indrisano als Amthor's Chauffeur (uncredited) |
 | Daun Kennedy als Girl in Bar (uncredited) |
| Donald Kerr als Taxi Driver (uncredited) |
| King Lockwood als Club Patron (uncredited) |
| Paul Phillips als Detective Nulty (uncredited) |
 | Dewey Robinson als New Boss at "Florian's" (uncredited) |
 | Shimen Ruskin als Elevator Operator (uncredited) |
 | Larry Wheat als Grayle's Butler (uncredited) |
| Adrian Scott | Producer |
| Raymond Chandler | Novel |
| Harry J. Wild | Director of Photography |
| Roy Webb | Original Music Composer |
| Joseph Noriega | Editor |
| Edward Dmytryk | Director |
| John Paxton | Screenplay |
| Mel Berns | Makeup Artist |
| Sid Rogell | Executive Producer |
| Carroll Clark | Art Direction |
| Albert S. D'Agostino | Art Direction |
| Michael Ohrenbach | Set Decoration |
| Darrell Silvera | Set Decoration |
| Bailey Fesler | Sound Recordist |
| James G. Stewart | Sound Re-Recording Mixer |
| Vernon L. Walker | Special Effects |
| C. Bakaleinikoff | Music Director |
| Edward Stevenson | Costume Designer |
| William Dorfman | Assistant Director |
| Leslie Urbach | Dialogue |
| Landon Arnett | Assistant Camera |
