Stefan Ahnhem is an established screenwriter for both TV and film. He has worked on a variety of projects, including adaptations of Henning Mankell’s “Kurt Wallander” series. He also serves on the board of the Swedish Writers Guild. “Victim Without a Face,” his first novel, won Sweden’s Crimetime Specsavers Award and Germany’s MIMI for best crime fiction. He lives in Stockholm. “Eighteen Below” is his newest novel.