Cast
- 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
Crew
- Frank Tuttle · Director
- S.S. Van Dine · Writer
- Louise Long · Writer
- Bartlett Cormack · Writer
- Richard H. Digges Jr. · Writer
- B.P. Schulberg · Producer
- Fred A. Datig · Casting director