Clue of the Silver Key

Police superintendent Meredith (Bernard Lee) and his younger partner Sgt. Anson (Stanley Morgan) have two disparate murders to solve: one an alcoholic waiter (Sam Kydd) found shot in the street with a large sum of cash in his pocket, the other a grouchy old blind man (Finlay Currie) who refuses to let his niece (Jennifer Daniel) marry artist Lyndon Brook.

Bernard Lee plays a crusty inspector heading the case of two murders which, he believes, are linked, and they suitably quite baffling. So baffling that you are keen to know the truth. Hence, that's the hook in this fairly pacy little British mystery thriller that features grand performances, especially by Lee and Finley Currie. The mystery gets rounded up with a neat finale where the killer is revealed.