Borderland (2007)
Borderland is a 2007 horror film written and directed by Zev Berman. It is very loosely based on the true story of Adolfo de Jesús Constanzo, the leader of a religious cult that practiced human sacrifice. Costanzo and his followers kidnapped and murdered University of Texas junior, Mark J. Kilroy, in the spring of 1989.
More at Wikipedia.