Decent haunted house, supernatural horror yarn that could have been much better than what it turned to be. The weakness of the film lies in its extremely slow pacing where there's not really anything interesting that happens. This film had the potential in delivering memorable chills; instead this is a mostly dull affair that really doesn't thrill. Book of Blood is a decent idea, and it could have been a stellar haunted house, supernatural horror picture, however it doesn't terrify the way it should. The biggest problem with the film is that it offers too little too late, and you're left mostly bored throughout the film. I liked the film, however I simply felt that there could have been more plot development to really make this one stand out. The ideas are here, but director John Harrison seems like he doesn't know to craft a truly compelling and interesting horror movie. This film is decent at best with many flaws, and overall it feels like the director tried to rush things in order to create a film based on horror master Clive Barker's Books of Blood. Expect minor chills and a low budget feel to this one, compared to The Midnight Meat Train, this film is inferior, worth seeing if you love Barker's work, but doesn't necessitate multiple viewings as this one is pretty forgettable in the long run.