A murderous game. The killer makes the rules. Death hangs on the roll of the dice. 
In murder investigations, it pays to keep things simple: motive, method, opportunity. But the case in front of Detective Fabian Risk is a nightmare. A killer who strikes out of nowhere. No apparent motive. No consistent method. Victims are tortured, strangled, burned, dismembered - each grisly killing carried out with savage precision, as if following the rules of a hellish game.