"It's never the person you most suspect. It's also never the person you least suspect, since anyone with half a brain would suspect them the most. Therefore I know the killer to be […], the person I most medium suspect."
There is something inherently Hitchcockian in the suspense and slightly leaning toward the style of Kubrick in the photography and music that makes "Devil" an interesting ride. Watchers find out just enough about the characters to be fooled when the climax occurs, which is what brought this viewer to 4/5 stars instead of just 3 stars. The writing and acting is strong for a horror film. Definitely recommended.