Will is twelve years old and he’s just killed a man. Now he’s on his own, on the run, determined to discover the truth about his father disappearance.
Then Will steps through a window in the air into another world, and finds himself with a companion – a strange, savage little girl called Lyra. Like Will, she has a mission which she intends to carry out at all costs.
But the world of CittÃ gazze is a strange and unsettling place. Deadly, soul-eating Spectres stalk in its streets, while high above, the wingbeats of distant angels sound against the sky. And in the mysterious Torre degli Angeli lurks CittÃ gazze’s most important secret – an object which people from many worlds would kill to posses.