An electrifying tale of deceit and obsession from New York Times bestselling author of The Good Girl Mary Kubica  In downtown Chicago, Esther Vaughan disappears from her apartment without a trace. A haunting letter addressed to My Dearest is found among her possessions, leaving her roommate Quinn Collins to question how well she really knew her friend. Meanwhile, in a small town an hour outside Chicago, a mysterious woman appears in the quiet coffee shop where eighteen-year-old Alex Gallo works as a dishwasher. He is immediately drawn to her, but what starts as an innocent crush quickly spirals into something far more sinister.  As Quinn searches for answers about Esther, and Alex is drawn further under the stranger's spell, master of suspense Mary Kubica takes readers on a taut and twisted thrill ride that builds to a stunning conclusion and shows that no matter how fast and far we run, the past always catches up with us.