William Powell as Philo Vance

William 'Stage' Boyd as Harry Gray

Eugene Pallette as Sgt. Edward Heath

Paul Lukas as Adolph Mohler

Natalie Moorhead as Fanny Del Roy

Richard Tucker as Anthony Benson

May Beatty as Mrs. Paula Banning

E.H. Calvert as DA John F.X. Markham

Mischa Auer as Albert Brecker (uncredited)

Perry Ivins as Print Dealer (uncredited)

Charles McMurphy as Detective Burke (uncredited)

Guy Oliver as Captain Hagedorn (uncredited)

Dick Rush as Detective Welch (uncredited)

Otto Yamaoka as Sam (uncredited)