Dr. Charles Kessler

Virginia Kessler

Ralph Dickson / Paul Dickson

Evans the Butler

Lt. Williams

Mrs. Kessler

Jules Mason, caretaker

Mrs. Mason

Cecile Mannix, maid

Detective Ryan

Jim, a detective

Guard at Ralph's Execution (uncredited)

Psychiatrist (uncredited)

Kirby--Coroner (uncredited)

Kessler's Cook (uncredited)

Trial Judge (uncredited)