This like-new hardcover is in near fine condition. The pages are tight, square, and unmarked, and there are no internal markings. Please note: a dust jacket is not included. Rick Riordan, author of the Percy Jackson and the Olympians series, The Kane Chronicles, and The Heroes of Olympus, delivers another thrilling adventure. Thor’s hammer is missing—again. The thunder god has a troubling tendency to misplace his weapon, the mightiest force in the Nine Worlds. But this time, it hasn’t just been lost—it’s fallen into enemy hands.