His Dark Materials 2. The Subtle Knife: Philip Pullman

"What is he? A friend, or an enemy?" "He is a murderer." 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, Lyra. Her fate is strangely linked to his own, and together they must find the most powerful weapon in all the worlds...The second volume in Philip Pullman's incredible HIS DARK MATERIALS trilogy. First published in 1995, and acclaimed as a modern masterpiece, it won the UK's top awards for children's literature.