The 8th Plague (2006)

"It doesn't matter if you believe in hell... because hell believes in you"

The 8th Plague is the story of a woman named Launa who is investigating the disappearance of her sister, Nikki. Nikki had gone camping in the mountain town of Halcyon Springs and never came back. Becoming more and more frustrated, Launa realizes that she must find her sister on her own with the help of Mason, a mysterious local man with a shadowed past.