Philo Vance

Paul Lukas

Doris Reed

Rosalind Russell

Priscilla Kinkaid Llewellyn

Alison Skipworth

Lynn Llewellyn

Donald Cook

Kincaid

A.S. Byron

Richard Kinkaid

Arthur Byron

Sergeant Ernest Heath

Ted Healy

Currie

Eric Blore

Amelia Llewellyn

Isabel Jewell

Becky

Louise Fazenda

Dr. Allen Kane

Leslie Fenton

Markham

Purnell Pratt

Virginia Llewellyn

Louise Henry

Husband of Fat Lady

Ernie S. Adams

Smith

Leo G. Carroll

Smith

Leo Carroll

Dr. Doremus

Charles Sellon

Auctioneer (uncredited)

William Demarest

Casino Patron (uncredited)

Brooks Benedict

Fat Lady

Grace Hayle

Nurse to Lynn (uncredited)

Edna Bennett

Reporter (uncredited)

Milton Kibbee

Waiter (unconfirmed) (uncredited)

Sidney Bracey

Dr. Elton (uncredited)

Wallis Clark

Reporter

Tom Herbert

Taki - Casino Pageboy (uncredited)

Keye Luke

Auction Floorman (uncredited)

Jay Eaton

Mrs. Marting (uncredited)

Lillian Elliott

Watchman (uncredited)

Pat Flaherty

Police Detective (unconfirmed) (uncredited)

Eddie Hart

Roulette Croupier (uncredited)

Alphonse Martell

Casino Patron (uncredited)

Bert Moorhouse

Japanese Casino Waiter (uncredited)

Miki Morita

Assistant Coroner (uncredited)

Frank Reicher

Police Detective (uncredited)

Dick Rush