The Retreat (2005) is a Horror film that follows a group of college students travels to the cottage of their psychology professor Barren in an isolated island as a reward of their teamwork in the research of Barren. They expect to spend the weekend with lots of sex, but a serial-killer turns their party in a nightmare. The Retreat is not currently listed with streaming providers in your selected region, but availability can change over time. It has a user rating of 4.0 out of 10 from 24 votes. Fans of horror movies may also want to explore similar titles below.