Twelve-year-old Avery Norton is head over heels in love with her best friend. With Paul Dillon at her side, she's invincible against the slippery roofs of Martha's Vineyard gingerbread houses, indifferent to sermons from her overprotective mother, Faye, and excited for another buoyant summer on the island. According to the staff at Taunton Asylum, she's also a crazed killer. After uncovering a gruesome secret in her...