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

Jane Murdoch

Honeymoon Wife

Brian McDermott

Det. Sgt. Stillman

Gerald Andersen

Major Paul Amery