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An Ancient Mayan curse is awakened in the ancient temples in Mexico, and people are killed in strange and gory ways by an invisible force.

Lennon, a new back-country ranger, travels alone through the dangerous wilderness, hoping to uncover the origins of a tragedy that has haunted her since she was a child.

An estranged couple takes a retreat in the woods. Foreboding neighbors, frivolous friends, and dark unseen forces lead to a shocking conclusion.

A group of friends search for a young English Oxford student who has disappeared whilst researching in Greece. They are shocked to find that, wherever he has been, certain unsolved murders have taken place. Not believing that their friend could be the perpetrator of such acts, they press on with their search, finding him under the spell of a beautiful Vampire, whose blood-sucking methods include the use of sado-masochism. Believing they have killed her, the group return home, unaware that their friend is now a Vampire.

A scientist working with genetics creates a horrifying flying creature that feeds on human blood. Following a gruesome trail of dead bodies, Scotland Yard investigators must scramble to halt its ravenous rampage.