This second volume in the His Dark Materials trilogy starts off at a heart-thumping pace and never slows down." Ages 12-up.There's a young hero--from our world--who is a match for Lyra Silvertongue and whose destiny is every bit as shattering. Like Lyra, Will Parry has spent his childhood playing games. Unlike hers, though, his have been deadly serious. This 12-year-old long ago learned the art of invisibility: if he could erase himself, no one would discover his mother's increasing instability and separate them.