This film, the final one by famed director Mario Bava, was quite the tale. I honestly found it quite creepy and possibly one of the best paranormal / supernatural haunted house movies I have seen in a long time. Boasting the combination of atmosphere, an intriguing storyline, and some decent acting, this movie has a lot to offer. However, like many films of that era, some of the visual FX are a bit dated and come off poorly (the razor or ghost effects). Yes, this is not a Bava masterpiece, but it holds up well and delivers an effective thriller with a tinge of vintage Italian horror.