From the bestselling author of I Am Still Alive comes a new nail-biter that's part survival story, part murder mystery, and all thriller--perfect for fans of Karen McManus and Holly Jackson Two years ago, Mercy Gray was hailed as a hero for saving lives during a mall shooting. She still carries souvenirs from that day: the fragment of a bullet lodged in her back, a mountain of medical debt, and guilt for ignoring her sister's...