Will has just killed a man. He's on the run. His escape will take him far beyond his own world, to the eerie disquiet of a deserted city, and to a girl called Lyra. Her fate is strangely linked to his own, and together they must find the most powerful weapon in all the worlds... The second book in Philip Pullman's His Dark Materials series, The Subtle Knife is an incredible book that will appeal to all ages.