A severed human leg is found buried deep inside a Scottish wood. An arm is uncovered on Dundee's Law Hill. Treasure hunters unearth a grizzly trophy at a Dundee beauty spot. An evil killer who has turned murder into a sport. DI Shona McKenzie is catapulted into a deadly game of human jigsaw. Only the jigsaw killer knows how many pieces there are and where they are hidden. The chase is on to catch them before another individual is dragged into this horrific game. Who will win?