Satan-obsessed teen turns Friday the 13th into a night of blood and terror.

On a dark and stormy night, police find a family dead in their mansion; a bloody mask lies nearby; a letter to the victim's mother hints at something darker than murder-suicide.

Whispers of missing women, unsolved attacks and a faceless monster haunt a quiet town, and after a shocking breakthrough, investigators realize that the killer never left.

After a call on Friday the 13th, José Herran vanishes; when investigators dig into the town he disappeared into, they uncover something monstrous; fear is currency, pain is ritual, and some visitors never leave; horror here doesn't hide - it thrives.

On Friday the 13th, 14-year-old Amber Dubois vanishes; a year later, Chelsea King disappears nearby; as fear spreads, a survivor links the two-and exposes a predator hiding in plain sight.

A young woman vanishes after entering a patrol car; for 35 years, she's a Jane Doe; as fear and rumors consume a small town, a chilling clue under hypnosis cracks the case open-and exposes a predator no one saw coming.