Magnus Chase and the Hammer of Thor (Book 2)The second book in the sensational Magnus Chase series from Percy Jackson creator Rick Riordan. Thor's hammer is missing again. The thunder god has a disturbing habit of misplacing his weapon the mightiest force in the Nine Worlds. But this time the hammer isn't just lost, it has fallen into enemy hands. If Magnus Chase and his friends can't retrieve the hammer quickly, the mortal worlds will be defenceless against an onslaught of giants. Ragnarok