"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...

• this hardback edition has a stunning cover by celebrated artist, Chris Wormell.