Nightwitch

Alone in her bed, Carolina plays with her locket, a gift from her dad. She doesn't know he stole it from an evil woman in Trinidad. She hears a noise outside her window, looks up and sees red eyes staring in at her. Something horrible is outside. The Nightwitch is a soucouyant, Southern Caribbean cousin to the vampire and werewolf. She is a never aging shapeshifter borne of a mixture of Voodoo and European folklore. She lives forever because she wears a locket that contains a magic potion. Her locket has been stolen and she wants it back.