The Bat (1959)

When I inform you I'm screening an Old Dark House film for you tonight, you know what to expect. Concealed doors, secret passages, people abducted in the few seconds when no-one is looking, dead bodies behind secret doors, servants who may or may not be malevolent and a scoundrel at large, moving freely about the house. Tonight's film doesn't miss a single cliche, despite the fact it isn't THE Old Dark House film, but AN Old Dark House film. This one is called The Bat, was made in 1959 and stars Agnes Moorehead and Vincent Price.