Blood Bound

Every 25 years, it begins. Bound to an ancient pact, a family of unlimited power descend upon a small rural town to sacrifice 4 human lives, one being a member of their own family. The ritual begins when 18 year old Kerry, finding herself pregnant, realizes her unborn baby is the target of a sinister plot. As the months pass and people around her begin to turn up dead, she desperately searches for a way out of this unthinkable situation... (imdb)