For fans of The Sanatorium and The Guest List, the newest dark romantic thriller from New York Times bestselling author Lisa Childs is laden with Gothic atmosphere and brilliantly plotted twists, as an undercover officer investigating her sister's death learns Halcyon Hall, the glamorous spa built on the grounds of a former insane asylum off the coast of Maine, holds decades of deadly secrets... Somewhere inside Halcyon Hall, the elite spa with an...