An exploration of the cinematic history of the folk horror, from its beginnings in the UK in the late sixties; through its proliferation on British television in the seventies and its many manifestations, culturally specific, in other countries; to its resurgence in the last decade.

Police sergeant Neil Howie is called to an island village in search of a missing girl whom the locals claim never existed. Stranger still, however, are the rituals that take place there.

Barely coping with the end of her marriage, Tessa Connover learns that her ex-husband, David, is now happily engaged to Julia. Trying to settle into her new life after moving in with David, Julia believes she has finally met the man of her dreams, the man who can help her forget her troubled past. Soon, Tessa's jealousy starts to consume her, and she will stop at nothing to turn Julia's paradise into the ultimate nightmare.