This is an example of excellent horror. While light on the actual scares (with only a small handful of jumpscares, too,) it still manages to create a sense of unease and claustrophobia. I found myself counting the exits in every room and building Jay entered, praying that she had a way to escape the thing following her if need be. I actually liked the main characters, which is rare for a horror film -- while they had some stupid moments,…