 | William Powell als Dr. Lawrence 'Brad' Bradford |
 | Jean Arthur als Paula Bradford |
 | James Gleason als Inspector Corrigan |
 | Eric Blore als Stokes, Bradford's Butler |
 | Robert Armstrong als Nick Martel, Bookie |
 | Lila Lee als Miss Prentiss, Bradford's Receptionist |
 | Grant Mitchell als John Summers, Luxury's Owner |
 | Erin O'Brien-Moore als Mrs. Summers |
 | Ralph Morgan als Leroy Hutchins, War Cloud's Owner |
 | Lucile Gleason als Mrs. Hutchins |
 | Johnny Arthur als Mr. Frankenstein (uncredited) |
 | Stanley Blystone als Police Radio Operator (uncredited) |
 | Tom Brower als Police Sergeant (uncredited) |
 | Spencer Charters als Dr. Bunting (uncredited) |
 | Frankie Darro als Spike Salisbury (uncredited) |
 | John Dilson als Analyst Examining Gelatin Capsule (uncredited) |
 | James Donlan als Taxi Driver (uncredited) |
 | Paul Fix als Lou Pender (uncredited) |
 | Dorothy Granger als Fill-in Receptionist (uncredited) |
 | Sam Hayes als Race Announcer (uncredited) |
 | Rollo Lloyd als Landlord (uncredited) |
 | Edward McWade als Minister in Film (uncredited) |
 | Frank Reicher als Henry Strand (uncredited) |
 | Charles Richman als Mr. Curtis (uncredited) |
 | Syd Saylor als Detective (uncredited) |
 | John Sheehan als Bert Murphy (uncredited) |
 | Buster Slaven als Newsboy (uncredited) |
 | Al St. John als Morgue Attendant (uncredited) |
 | Henry Stone als Ray Torro (uncredited) |
| Bob Tansill als Joe Jerino (uncredited) |
 | Frank M. Thomas als Mike North (uncredited) |
| James Edward Grant | Story |
| Stephen Roberts | Director |
| Edward Kaufman | Associate Producer |
| J. Roy Hunt | Director of Photography |
| Bernard Newman | Costume Design |
| Van Nest Polglase | Art Direction |
| Clem Beauchamp | Assistant Director |
| John L. Cass | Sound Recordist |
| Arthur Roberts | Editor |
| Roy Webb | Music Director |
| Perry Ferguson | Assistant Art Director |
| Darrell Silvera | Set Dresser |
| Anthony Veiller | Screenplay |
| Wallace Fox | Second Unit Director |
| Louis Shapiro | Second Assistant Director |
| John Sherwood | Second Assistant Director |
| Clem Portman | Sound |
| Harry Redmond Jr. | Special Effects |
| Jack MacKenzie | Second Unit Director of Photography |
| Max Steiner | Original Music Composer |
| Roy Webb | Original Music Composer |
| Amalia Kent | Script |
| Ruthalice Selznick | Script |
