Bela Lugosi

Dr. Charles Kessler

Polly Ann Young

Virginia Kessler

John McGuire

Ralph Dickson / Paul Dickson

Clarence Muse

Evans the Butler

Betty Compson

Mrs. Kessler

Terry Walker

Cecile Mannix, maid

Fred Kelsey

Detective Ryan

Jack Mulhall

Jim, a detective

Fred Aldrich

Guard at Ralph's Execution (uncredited)

Lloyd Ingraham

Psychiatrist (uncredited)

Robert Strange

Kirby--Coroner (uncredited)

Robert F. Hill

Trial Judge (uncredited)