Off the Deep End. Harperville Horrors

Harperville used to be a small, quiet town until the storm clouds rolled in over Rainbow Cove. Days and events begin to mix up, lunchrooms turn to warzones, carved-up cultists are fished out of the water from the dock, and at the center of the madness is Queenie Lowe. A high school senior whose only wish is to get out of this place. Her world is flipped upside down when she meets her new neighbor, the mysteriously charming Lulu. As Harperville descends into chaos, Detective Levi Earlington fights to make sense of a case that is unsolvable without help from the others on the force.
Despite his best efforts, he has only one lead: the badge of Queenie's dead father that no one will talk about. Queenie and Levi battle the horrors of Harperville to find who is truly behind it all. Even if it costs them their sanity.