Tremendously underrated. People are way too hard on LaBute's later works. I'd say this is easily one of the best and most thought-provoking thrillers I've ever seen. Normally movies like this always have the characters making dumb decisions and never doing what a normal person would do in the situations it sets up. Not once did that happen with this one. Sure, maybe it's not 100% realistic, but it's just a movie!