I remember getting my drivers' license. It allowed me to travel to towns a few miles from mine and see movies (only one was shown at a time in those days) at small local theaters. In the sixties we had Vincent Price, Peter Lorre, Sebastian Cabot, and others entertaining us with lightweight, scary little films. Many were based loosely on the works of Poe. Though I never saw this until a few minutes ago, it fits in with that genre. It has wonderful atmosphere. The heroine is not blameless, but has a case for murdering the old meany. Of course, she's going to pay a price, as is her doctor lover, when the old guy comes back to haunt her. There's a little Rebecca and Gaslight here, but it all works nicely to a satisfying conclusion. He who laughs last, of course. The performances are good and the atmosphere of the castle and its bleak goings on is a lot of fun. There is an intensity at work here that build, till people become paranoid and suspicious. See this. It's not a bad ghost story.