The Sinister Man

John Bentley

Superintendent Wills

Patrick Allen

Dr. Nelson Pollard

Jacqueline Ellis

Elsa Marlowe

Wilfrid Brambell

Lock-Keeper

John Glyn-Jones

Dr. Maurice Tarn

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Jane Murdoch

Honeymoon Wife

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Brian McDermott

Det. Sgt. Stillman

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Gerald Andersen

Major Paul Amery