You can always count on James Wan for an effective horror flick.  Going into this I hadn’t read what it was about, just heard that people liked it a lot. Halfway through I was wondering why as, while decent, it didn’t seem like anything special, until the third act when we find out what’s going on and all hell breaks loose. Insanely fun and gory last act which changes this movie from just a decent horror movie to something a lot more memorable.