The Snowman (Nesbo) / Jo Nesbo

One night, after the first snowfall of the year, 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 .