Out of the blue, Susie Jones is contacted on social media by Anna, the girl she gave up for adoption 15 years ago. But when they meet, Anna's home life sounds distinctly strange to Susie. And when Anna's adoptive parents seem to overreact to the fact she contacted them at all, Susie becomes convinced that Anna needs her help. The much-anticipated gripping new thriller from the bestselling author of "The Girl Before".