Philo Vance is hired to write a true-crime mystery... but when the facts about an unsolved crime are about to be brought out into the open a murder takes place.
| Actor | Role |
|---|---|
 Alan CurtisPhilo Vance | Philo Vance |
 Sheila RyanMona Bannister | Mona Bannister |
 Tala BirellMrs. Elizabeth Phillips | Mrs. Elizabeth Phillips |
 Frank JenksErnie Clark | Ernie Clark |
 James BellSheriff Harry Madison | Sheriff Harry Madison |
 Frank FentonPaul Morgan | Paul Morgan |
 Paul MaxeyMartin Jamison | Martin Jamison |
| KKenneth FarrellJoe, the photographer | Joe, the photographer |
| TToni ToddLouise Roberts aka Mrs. Paul Morgan | Louise Roberts aka Mrs. Paul Morgan |
| DDavid LeonardCarl Wilson (uncredited) | Carl Wilson (uncredited) |
 William NewellDeputy (uncredited) | Deputy (uncredited) |
 Tom QuinnHaddon Phillips (uncredited) | Haddon Phillips (uncredited) |
 Harry StrangShip's Purser (uncredited) | Ship's Purser (uncredited) |
 Frank WilcoxThaddius Carter (uncredited) | Thaddius Carter (uncredited) |