Thor's hammer is missing again. The thunder god has a disturbing habit of misplacing his weapon - the mightiest force in the Nine Worlds.
Rick Riordan is an award-winning mystery writer. Percy Jackson and the Lightning Thief, Rick's first novel featuring the heroic young demigod, was the overall winner of the Red House Children's Book Award in 2006 and is now a blockbuster film franchise, starring Logan Lerman. Rick lives in Boston with his wife and two sons.