Devil's Island

Have you never doubted for a moment that you know everything about a person you've known all your life? Inspector Sarah Geringën of the Oslo police had no reason to do so until she started investigating the circumstances of her father's shocking death. His body was found in the study sprinkled with white powder, with mutilated fingers and a mysterious key in his stomach. Released from prison after her last case, Sarah immediately sets out on the trail of the killer, What horrors will she have to endure to unravel her father's dark secret?