Warren William

Philo Vance

Margaret Lindsay

Bernice Stamm

Lyle Talbot

Gale Leland

Eugene Pallette

Sgt. Ernest Heath

Helen Lowell

Mother Stamm

Robert McWade

District Attorney Markham

Robert Barrat

Rudolph Stamm

Dorothy Tree

Ruby Steele

George E. Stone

Ken Tatum

Etienne Girardot

Dr. Doremus - Coroner

George Meeker

Monty Montague

Robert Warwick

Dr. Halliday

William B. Davidson

Greeff

Arthur Aylesworth

Trainor - Stamm's Butler

Charles C. Wilson

Det. Hennessey

Cliff Saum

Det. Burke (uncredited)

Milton Kibbee

Service Station Attendant (uncredited)

Wilfred Lucas

Police Sergeant (uncredited)

Eric Wilton

Currey - Vance's Butler (uncredited)

Bruce Mitchell

Commander (uncredited)

Eddie Shubert

Detective (uncredited)

Sam McDaniel

Steam Room Attendant (uncredited)