The Snowman (Harry Hole, Bk. 7)

On night, after the year's first snowfall, a boy named Jonas wakes up and discovers that his mother has disappeared. Only one trace of her remains: a pink scarf, his Christmas gift to her; now worn by the snowman that inexplicably appeared in their yard earlier that day.

Inspector Harry Hole suspects a link between the missing woman and a suspicious letter he's received. The case deepens when a pattern emerges: over the past decade, eleven women have vanished - all on the day of the first snow. But this is a killer who makes his own rules . . . and he'll break his pattern just to keep the game interesting, as he draws Harry ever closer into his twisted web.