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.

When Ragnarok--the apocalypse--threatens, the human descendants of the gods band together to fight monsters, and Matt Thorsen and his friends must journey to the underworld to save a descendant.

When eleven-year-old Pru and new boy ABE discover another world beneath their quiet town, where Viking gods lurk just out of sight, they must race to secure the Eye of Odin, source of all knowledge--and the key to stopping a war that could destroy both human and immortal realms.

"As Ragnarok--the apocalypse--approaches, the thirteen-year-old descendants of the gods realize they can't take every step of their journey together, as Matt must fight the Midgard Serpent alone, and Fen and Laurie are pulled in different directions"--

Two years after their adventures in The Land of the Silver Apples, the apprentice bard Jack and his Viking companion Thorgil confront the malevolent spirit of a vengeful mermaid and begin a quest that casts them among the fin folk of Notland.

An unlucky twelve-year-old Norwegian boy named Odd leads the Norse gods Loki, Thor, and Odin in an attempt to outwit evil Frost Giants who have taken over Asgard.

"In an alternate U.S.A. (the United States of Asgard), Soren Bearskin, the son of an infamous beserker, and Astrid Glyn, daughter of a renowned seer, embark on a road trip to find Baldur, the missing god whose absence has caused panic throughout the country."--

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

...

Torvi and Morgunn must learn to survive on their own after a plague sweeps through their steading. They hear rumors of Uther, a Fremish wolf-priest, and a band of girls who move through Vorseland searching for recruits. When Uther captures Morgunn, Torvi teams up with a band roving Elsh artists called the Butcher Bard to rescue her sister-- or die trying. -- adapted from jacket

"Freya is a Valkyrie, a reaper of souls. But she hates what she must do. She doesn't like humans and the pain they inflict on each other, and she never wants to visit another battlefield. But when a soldier begs her to help his family back in the human realm, she agrees and discovers a world of friends. Now she'll have to find a way to keep her promise to the soldier and prevent the wrath of Odin from destroying the world"--