Sisters of Salem
Something wicked this way comes...
Twin sisters, Mercy and Hunter are witches, direct descendants of the Goode family, the founders of their town. After the murder of their mother at the hands of a foul demon, they have become the protectors of the Gates to different underworlds—ancient portals between their world and realms where mythology rules and the darkest of creatures exist.
Grief has taken a terrible toll on the twins.