His Dark Materials, Book III : The Amber Spyglass

In this conclusion to the fantasy trilogy begun by The Golden Compass and The Subtle Knife, Lyra encounters a host of new characters like Gallivespian Lord Roke, a hand-high spymaster to Lord Asriel, and the Mulefa, which are mysterious wheeled creatures with the power to see Dust--and its secrets. Read by the author and a full cast