Friction (2010)

Filmmaker Cullen Hoback travels to a private high school where he writes a script about a real couple and the student who comes between them. Through the process of making the film, hidden truths about the real lives of the actors playing themselves are revealed, and the line between fiction and reality blurs. What remains is part documentary, part fiction, in a one of a kind story that will keep you guessing long after the shattering conclusion.