Sixteen-year-old Olivia Prior is missing three things: a mother, a father, and a voice. Her mother vanished all at once, her father by degrees, and her voice was a thing she never had to start with. Her only companions are the ghouls she sees and her mother’s journal, which captured a mind in turmoil. Near the end of her time at Merilance School of Girls, Olivia receives a letter from an uncle she’s never met, summoning her to his estate–Gallant. But when she arrives, she discovers that the letter was years late. Her uncle is dead and the estate is empty, save for her cousin Matthew and the servants. Olivia is permitted to remain, but must follow two rules: don’t go out after dusk, and always stay on the right side of the crumbling wall. But Gallant is a house of secrets. A house sitting in a lonely vigil. A place where the ghouls are powerful. As Olivia searches for answers about her family, her past, she discovers a dark reflection of everything she knew, an ancient realm where ghosts take form, and the dark master sits waiting for her…