Denise Mina explains to her readers on the first page of this novel why her protagonist, Anna, has assumed a new identity. We gradually learn the details, as Anna flees from her soon-to-be ex-husband and her two daughters in order to save her life. It involves a shocking instance in her past, and the murders of three people, one of whom Anna knew. The reader unravels the mystery of their deaths along with Anna, with a surprising twist at the end. Good read for mystery lovers!