| Cast list | | William Powell | as | Philo Vance | | Florence Eldridge | as | Sibella Greene | | Ullrich Haupt | as | Dr. Arthur Von Blon | | Jean Arthur | as | Ada Greene | | Eugene Pallette | as | Sgt. Ernest Heath | | E.H. Calvert | as | Dist. Atty. John F.X. Markham | | Gertrude Norman | as | Mrs. Tobias Greene | | Lowell Drew | as | Chester Greene | | Morgan Farley | as | Rex Greene | | Brandon Hurst | as | Sproot | | Augusta Burmeister | as | Gertrude Mannheim | | Marcia Harris | as | Hemming | | Mildred Golden | as | Barton | | Helena Phillips Evans | as | Police nurse (as Helena Phillips) | | Shep Camp | as | Medical Examiner |
| | Crew list: | | Frank Tuttle (Director) | | Bartlett Cormack (Writer) | | Richard H. Digges Jr. (Writer) |
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