Bigfoot Took Her

What happened to 16-year-old Theresa Bier in the remote forests of central California? For locals, it's one of the strangest missing person cases of a lifetime. They'll tell you Bigfoot took her -- but two investigators believe there is more to the story.

Jessica and Robert uncover shocking new testimonies surrounding Theresa's disappearance. An ex-girlfriend sheds light on Blind Johnny's dark past, and Skip's daughter unveils details about Theresa's final days -- and a link to the Speed Freak Killers.

The search for Theresa takes a dramatic turn, and an unsuspecting family's home becomes a potential crime scene. While new evidence emerges that could change the entire case, a final witness steps forward with heartbreaking new details.