The Devil Inside stands out as an exceptional horror film because it creates intense fear by avoiding typical Hollywood special effects. The movie’s effectiveness comes from its stark, realistic found-footage style, feeling more like a disturbing, unauthorized record than a conventional film—the lack of music or elaborate lighting adds to the sense of vulnerability. Rather than relying on computer-generated imagery, …

The filmmakers managed to create something impressive given the apparent constraints of their resources, and the movie largely lives up to what it sets out to do... with one significant exception at the very end. However, that final letdown actually suggests you’ve been thoroughly engaged—and probably quite frightened—throughout, mainly because you'll want more of what preceded it. A more satisfying conclusion would …