The frozen body of a woman is found on the ice near Torneträsk in northern Sweden. She has been brutally tortured, but the killing blow was clumsy, almost amateur. The body is quickly identified, raising hopes of an open-and-shut solution. But Rebecka Martinsson and Anna-Maria Mella soon find themselves investigating corruption at the heart of one of Sweden's most successful mining companies. One that has powerful enemies of its own.