Philo Vance

Priscilla Kinkaid Llewellyn

Lynn Llewellyn

Doris Reed

Richard Kinkaid

Police Sergeant Ernest Heath

Currie

Amelia Llewellyn

Becky

District Attorney John Markham (as Purnell B. Pratt)

Dr. Kane

Virginia Llewellyn

Smith (as Leo Carroll)

Dr. Doremus

Husband of Fat Lady at Auction (uncredited)

Casino Patron (uncredited)

Nurse to Lynn (uncredited)

Waiter (unconfirmed) (uncredited)

Dr. Elton (uncredited)

Auctioneer (uncredited)

Auction Floorman (uncredited)

Mrs. Marting (uncredited)

Watchman (uncredited)

Police Detective (unconfirmed) (uncredited)

Fat Lady at Auction (uncredited)

Reporter (uncredited)

Reporter (uncredited)

Taki - Casino Pageboy (uncredited)

Roulette Croupier (uncredited)

Casino Patron (uncredited)

Japanese Casino Waiter (uncredited)

Photographer (uncredited)

Assistant Coroner (uncredited)

Police Detective (uncredited)

Sound

Directing

Writing

Writing

Writing

Production

Sound

Camera

Editing

Art

Art

Art

Sound

Costume & Make-Up