"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 defenseless against an onslaught of giants. Ragnarok will begin. The Nine Worlds will burn. Unfortunately, the only person who can broker a deal for...

Magnus and his friends set sail for the farthest borders of Jotunheim and Niflheim in pursuit of Asgard's greatest threat, Loki's demonic ship full of zombies.

In 1905 czarist Russia, an impoverish country girl Elena and the aristocratic Ekatrina meet and set in motion an escapade that includes mistaken identity, a monk locked in a tower, a prince traveling incognito, and the witch Baba Yaga.

Number 47, a fourteen-year-old slave boy growing up under the watchful eye of a brutal master in 1832, meets the mysterious Tall John, who introduces him to a magical science and also teaches him the meaning of freedom.