Warning: A terrifying number of spoilers lurk below!
Sinister does a fabulous job at setting the scene, switching the lights off and putting us through several nights of sheer hell. A strange soundtrack adds to the suspense as we watch tech-savvy Ellison Oswalt piece together facts and figures from creepily grainy footage of gruesome deaths. It's just that, as with almost every single spooky or ghost-orientated film that's been made in the past couple of decades, the ending is not as scary as it thinks it is and actually sort of ruins all the good stuff that comes before - and it is really very good stuff.