Belfast, Northern Ireland: A man left horrifically maimed by a car accident appears to have taken his own life. It should be an open-and-shut case, but something doesn't feel right to DCI Serena Flanagan. Following up Those We Left Behind, this Boston Globe Best Book of 2016 follows Flanagan as she ignores advice to close the case, call it a suicide, and be done with it. As she picks at the threads of the dead man's life, a disturbing picture emerges, and she realizes the man's widow, Roberta Garrick, is not what she seems.