Horror sequels are rarely very good. Great horror movies are pretty rare to begin with, and when you consider how inferior sequels generally are to their originals, it’s remarkable when any horror sequel isn’t simply terrible. Insidious, Chapter 2 is one of the best of the last decade or so.
The first Insidious was the best horror movie of 2011. It was essentially just a haunted-house movie, but it was so good at earning legitimate scares, it rose high above its standard plot and borrowed ideas. The original movie ended with a cliffhanger that could…