Detective Harry Hole embarrassed the force, and for his blunders he?s been reassigned to mundane surveillance tasks. But while monitoring neo-Nazi activities in Oslo, Hole is inadvertently drawn into a mystery with deep roots in Norway's dark past, when members of the government willingly collaborated with Nazi Germany. More than sixty years later, this black mark won't wash away - and disgraced old soldiers who once survived a brutal Russian winter are being murdered, one by one. Now, with only a stained and guilty conscience to guide him, an angry and erratic policeman must make his way safely past the traps and mirrors of a twisted criminal mind. For a conspiracy is taking rapid and hideous shape around Hole...and Norway's darkest hour may be still to come.