Vermont, 1950. There's a place for the girls whom no one wants—the troublemakers, the illegitimate, the ones too smart for their own good. It's called Idlewild Hall, and local legend says the boarding school is haunted. Four roommates bond over their whispered fears—until one of them mysteriously disappears.... Vermont, 2014. Twenty years ago, the body of Fiona Sheridan's elder sister was found in the overgrown fields near the ruins of Idlewild Hall. While her sister's boyfriend was tried and convicted of the murder, Fiona can't stop revisiting the events, unable to shake the feeling that something was never right about the case. When the renovation of Idlewild Hall leads to a shocking discovery linked to the loss of her sister, Fiona must confront secrets that were meant to stay hidden in the past—and a voice that won't be silenced....