
A man witnesses a murder in a secluded mansion. When he reports it, there's no evidence of the murder, or that anyone was there. Two years later he wakes up in a hospital room after a polo accident to find he's had amnesia, is now married, and living in Switzerland. Now remembering the incident he returns to England to try to solve the mystery.
Richard Stuart

Elizabeth Sutton

Dr. Ralph Sawyer

Caretaker

Sir Howard Nettleton

Peter Martin

Insp. Huntington

Lord Dunnsfield

Sgt. Hooper

Chairman

Business Spokesman

Miss Abernathy

Sister Teresa

Mrs. Doyle
Navvy
Peter Martin's Secretary

Charles
Nurse

Swiss News Agent

Roger
Brandon
Policeman in Richard's Flat