The SnowmanAfter the first snowfall of the year, a young boy wakes up and discovers that his mother has disappeared. Only one trace of her remains: a pink scarf now worn by the snowman that appeared in their yard earlier that day. Detective Harry Hole soon discovers that an alarming number of wives and mothers have gone missing over the years. When a second woman disappears, Harry's worst suspicion is confirmed: a serial killer is operating on his home turf.