A shocking, original psychological thriller about a mother gone missing and the family she leaves behind, ultimately proving how unknowable even those closest to us can be Alexandra Southwood is missing. Held in a room against her will, she's forced to imagine how her husband, Marc, and two daughters are coping in the wake of her disappearance. She's shown news clips of Marc, standing in front of the cameras, desperately appealing to the public for information on her whereabouts. In her solitude, she must torture herself with visions of her family's devastated new reality. She thinks of what's lost, remembering the beginnings of her romance with Marc and the beautiful family they built together. Marc's pain is visceral. He thinks of nothing but his wife. He shifts from utter despair to frantic action, and when the police discover Alexandra's bloody belongings by the river, turning their missing-persons case into a murder investigation, he cannot accept that she is lost to him. He embarks on his own journey, through the dark maze of the art world that so gripped his wife, following a trail that leads him to find answers to questions he never wanted to ask.