A simple photograph causes the collapse of a mother's world in this shocking thriller by the bestselling author and creator of the popular Netflix series Fool Me Once. When Grace Lawson picks up a new set of family photographs, she finds a picture that does not belong there - a photo dating back at least twenty years, with a man who looks remarkably like her husband, Jack. And while Jack denies it is him, he disappears that night, taking the photograph with him. Now, to save her family from a killer who will stop at nothing to get the photo, Grace must confront the dark corners of her own tragic past....