A Lesson in Vengeance by Victoria Lee (Author)

Felicity Morrow is back at the Dalloway School. Perched in the Catskill Mountains, the centuries-old, ivy-covered campus was home until the tragic death of her girlfriend. Now, after a year away, she's returned to finish high school. She even has her old room in Godwin House, the exclusive dormitory rumored to be haunted by the spirits of five Dalloway students—girls some say were witches. The Dalloway Five all died mysteriously, one after another, right on Godwin grounds.