"Annika Bengtzon is back at Kvällspressen's Stockholm offices after three years as the newspaper's Washington, DC correspondent. One afternoon, a young woman is found dead behind a nursery school in a Stockholm suburb. She is the fourth victim with the same characteristics: a young mother, stabbed from behind. In the editorial offices of Kvällspressen they sense a serial killer, but Annika dismisses it as a wild fantasy. Meanwhile, her husband Thomas...