Playboy Larry Blendon introduces his grandmother Stella Blendon to his fiancée, radio singer Virginia Berneaux. Despite Larry's record of broken romances and divorces, Virginia decides she will marry him. Virginia is slain that night and Blandon telephones his friend, Philo Vance, to help find the killer.
| Actor | Role |
|---|---|
 William WrightPhilo Vance | Philo Vance |
 Vivian AustinLorena Blendon Simms | Lorena Blendon Simms |
 Leon BelascoAlexis Karnoff | Alexis Karnoff |
 Clara BlandickStella Blendon | Stella Blendon |
 Ramsay AmesVirginia Berneaux | Virginia Berneaux |
 Damian O'FlynnLarry Blendon | Larry Blendon |
 Frank WilcoxGeorge Hullman | George Hullman |
 Iris AdrianMaggie McCarthy / Choo-Choo Divine | Maggie McCarthy / Choo-Choo Divine |
| AAnn StauntonHelen Varney Blendon | Helen Varney Blendon |
 Tim MurdockThe Policeman | The Policeman |
 Mary ScottMary | Mary |
 Wade CrosbyChoo-Choo's Bodyguard (Uncredited) | Choo-Choo's Bodyguard (Uncredited) |
 Eddie DunnPolice Lieutenant Mullard (Uncredited) | Police Lieutenant Mullard (Uncredited) |
 Broderick O'FarrellDr. Campbell (Uncredited) | Dr. Campbell (Uncredited) |
| PPhyllis PlanchardAgatha Cowle (Uncredited) | Agatha Cowle (Uncredited) |
| CCy StevensGreg Simms (Uncredited) | Greg Simms (Uncredited) |