The Dark Man (1951)

Poor old "Molly" (Natasha Parry) has the misfortune to witness the eponymous character commit double murder. He knows she knows, and she knows he knows that she does, and so now he (Maxwell Reed) is determined to shut her up before she can tell pursuing police inspector "Vine" (Edward Underdown) and he faces the gallows. There's no real jeopardy here - we all know who did what to whom, but it's still quite an engaging little cat and mouse thriller that, though it could certainly do with losing twenty minutes or so, has a strong supporting cast and some nice photography of England's Sussex coast as the adventure hots up to an exciting, if predictable, denouement. The acting and script are all pretty generic, but it's still worth a watch.