Inside (2006)

Alex has a disturbing hobby of following strangers...until one night he gets caught. Instead of calling the police, the couple--fascinated by Alex's resemblance to their dead son--asks him to stay, and Alex finds himself trapped in a horrifying existence of desperation, despair, and insanity.

Inside is a 2006 movie. Genres: Drama, Thriller, Horror. Directed by Jeff Mahler. Main cast: Nicholas D'Agosto, Cheryl White, Kevin Kilner, Leighton Meester, Barbara Allyne Bennet. Runtime: 99 minutes. Its average rating is 4.5 out of 10, from 22 votes.