Paul Lukas
Philo Vance
Acting
Alison Skipworth
Priscilla Kinkaid Llewellyn
Acting
Donald Cook
Lynn Llewellyn
Acting
Rosalind Russell
Doris Reed
Acting
Arthur Byron
Richard Kinkaid
Acting
Ted Healy
Police Sergeant Ernest Heath
Acting
Eric Blore
Currie
Acting
Isabel Jewell
Amelia Llewellyn
Acting
Louise Fazenda
Becky
Acting
Purnell Pratt
District Attorney John Markham (as Purnell B. Pratt)
Acting
Leslie Fenton
Dr. Kane
Acting
Louise Henry
Virginia Llewellyn
Acting
Leo G. Carroll
Smith (as Leo Carroll)
Acting
Charles Sellon
Dr. Doremus
Acting
Ernie Adams
Husband of Fat Lady at Auction (uncredited)
Acting
Brooks Benedict
Casino Patron (uncredited)
Acting
Edna Bennett
Nurse to Lynn (uncredited)
Acting
Sidney Bracey
Waiter (unconfirmed) (uncredited)
Acting
Wallis Clark
Dr. Elton (uncredited)
Acting
William Demarest
Auctioneer (uncredited)
Acting
Jay Eaton
Auction Floorman (uncredited)
Acting
Lillian Elliott
Mrs. Marting (uncredited)
Acting
Pat Flaherty
Watchman (uncredited)
Acting
Eddie Hart
Police Detective (unconfirmed) (uncredited)
Acting
Grace Hayle
Fat Lady at Auction (uncredited)
Acting
Tom Herbert
Reporter (uncredited)
Acting
Milton Kibbee
Reporter (uncredited)
Acting
Keye Luke
Taki - Casino Pageboy (uncredited)
Acting
Alphonse Martell
Roulette Croupier (uncredited)
Acting
Bert Moorhouse
Casino Patron (uncredited)
Acting
Miki Morita
Japanese Casino Waiter (uncredited)
Acting
Pinky Parker
Photographer (uncredited)
Acting
Frank Reicher
Assistant Coroner (uncredited)
Acting
Dick Rush
Police Detective (uncredited)
Acting