

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.
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Cast

Louis Jourdan
Richard Stuart

Mary Tyler Moore
Elizabeth Sutton

Wilfrid Hyde-White
Dr. Ralph Sawyer

Stanley Holloway
Caretaker

Alexander Knox
Sir Howard Nettleton

Terence Alexander
Peter Martin

Ronald Howard
Insp. Huntington

Laurence Naismith
Lord Dunnsfield

Norman Bird
Sgt. Hooper

Ernest Clark
Chairman

Bernard Archard
Business Spokesman

Nora Nicholson
Miss Abernathy
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