 Edmund LowePhilo Vance | Philo Vance |
 Virginia BruceZalia Graem | Zalia Graem |
 Benita HumeNurse Gladys Beeton | Nurse Gladys Beeton |
 Douglas WaltonFloyd Garden | Floyd Garden |
 Nat PendletonSergeant Ernest Heath | Sergeant Ernest Heath |
 Gene LockhartEdgar Lowe Hammle | Edgar Lowe Hammle |
 H.B. WarnerMajor Fenwicke-Ralston | Major Fenwicke-Ralston |
 Kent SmithWoode Swift | Woode Swift |
 Grant MitchellDistrict Attorney Markham | District Attorney Markham |
 Frieda InescortMrs. Madge Fenwicke-Ralston | Mrs. Madge Fenwicke-Ralston |
 Henry B. WalthallDr. Garden | Dr. Garden |
 Jessie RalphMrs. Hammle | Mrs. Hammle |
 Charles TrowbridgeInspector Colby | Inspector Colby |
 Etienne GirardotDr. Doremus | Dr. Doremus |
 William AustinSneed, Hammle's Butler (Uncredited) | Sneed, Hammle's Butler (Uncredited) |
 Don BrodieMessenger (Uncredited) | Messenger (Uncredited) |
 Olaf HyttenVance's Butler (Uncredited) | Vance's Butler (Uncredited) |
 Rosalind IvanMrs. Jepson (Uncredited) | Mrs. Jepson (Uncredited) |
 Fred KelseyHeath's Assistant (Uncredited) | Heath's Assistant (Uncredited) |
 Wilbur MackMan Yelling at Race Track (Uncredited) | Man Yelling at Race Track (Uncredited) |
 Lee PhelpsBus Driver (Uncredited) | Bus Driver (Uncredited) |
| AAlexander PollardWaiter at Race Track (Uncredited) | Waiter at Race Track (Uncredited) |
| JJack RoperServant Eating Caviar (Uncredited) | Servant Eating Caviar (Uncredited) |
 Matty RoubertNewsboy (Uncredited) | Newsboy (Uncredited) |
 Dorothy VernonWoman Running for Bus (Uncredited) | Woman Running for Bus (Uncredited) |
 Duke YorkTraffic Cop (Uncredited) | Traffic Cop (Uncredited) |
