Simon Says

Five high school seniors (3 cute girls) in a VW van on their way to camp by a river in the forest hear about a boy, who once killed his identical twin and parents in the area. They ignore the warning.

Simon Says is a 2006 horror thriller movie directed by William Dear, starring Crispin Glover, Margo Harshman, Greg Cipes. It holds an IMDb rating of 4.2/10 from 3,984 votes and runs 1h 27m.