The Lost is a 2006 American psychological horror film that was written and directed by Chris Sivertson based on the Jack Ketchum novel of the same name, which in turn was inspired by the true story of serial killer Charles Schmid. It was produced by Lucky McKee. The film stars Marc Senter as charismatic teen sociopath Ray Pye. Senter won best actor awards from both Screamfest and Fantaspoa film festivals. He was also nominated for a Fangoria Chainsaw Award. Supporting cast include Shay Astar, Alex Frost, Michael Bowen, and Robin Sydney. The movie had its world premiere at the SXSW Film Festival with a limited theatrical release following shortly after.