A serial killer returns to butcher a fourth family and carve a symbol into the flesh of a little girl's forehead. Ex-Detective Inspector Cole Randall is released from Springfield Asylum after a year of being committed indefinitely for killing the previous three families - including his own. Now he's operating outside the law and he's out for revenge, then he plans to join his wife and children. Randall's ex-partner - Detective Inspector Molly Stone - has been given the case, but she only has seven days to solve the riddle of the symbols and how a renowned international financier can be in two places at the same time. She knows Randall is now a civilian and wants revenge, but she also knows she needs his help, and she agrees to an unorthodox partnership. As they hunt a serial killer, Randall looks for redemption, but finds love; and Molly searches for love, but finds terror.