Paul Lukas

Philo Vance

Alison Skipworth

Mrs. Llewellyn

Donald Cook

Lynn

Rosalind Russell

Doris

Arthur Byron

Kinkaid

Ted Healy

Sergeant Heath

Eric Blore

Currie

Isabel Jewell

Amelia

Louise Fazenda

Becky

Purnell Pratt

Markham

Leslie Fenton

Dr. Kane

Louise Henry

Virginia

Leo G. Carroll

Smith

Charles Sellon

Dr. Doremus

William Demarest

Auctioneer (uncredited)

Edwin L. Marin