Witchunter (2002)

Harper's Grove is a quiet little town in the middle of South Michigan. Some towns have dark secrets lurking underneath, but Harper's Grove has the worst secret of all. For over 30 years, children have been kidnapped and murdered with little interest from local authorities or town elders. It isn't until a young mother contacts Jack Junaeu, a private eye with a desperate drinking problem, that someone tries to do something about it. But can one mother and one pathetic drunk stop a town full of lies, deceit, and murder?