The X-Files Origins: Agent of Chaos

In the spring of 1979, seventeen-year-old Fox Mulder is the new senior in high school--his father's way of trying to help the family move on after the disappearance of Mulder's little sister. But when a local boy turns up dead and another child is abducted, Mulder can't stop himself from getting involved, and finds himself on the trail of a serial killer.