The Vikings want to finish England. They assemble the Great Army, whose one ambition is to conquer Wessex. Dispossessed young nobleman Uhtred has no love for King Alfred. Yet fate, as Uhtred learns, has its own imperatives, and when the Vikings attack out of a wintry darkness to shatter the last English kingdom, Uhtred finds himself at Alfred's side.

Returning to his northern home, Uhtred of Bebbanburg finds himself caught up in the takeover crusade of a self-proclaimed ruler of Northumbria, a situation that culminates in a midnight siege on a seemingly impregnable city.

In a scheme arranged by the god Odin, Hadding is born to King Gram Skjoldung of Denmark but is sent to be raised by giants for his own safety. After his father is murdered, Hadding must claim his destiny. Prey to the follies of humans and gods, he rises to the challenges of war, fate, and love in a mythic adventure "episodic in character, gory in detail, fatalistic in atmosphere, and spiked with sinister, chthonic Norse magic" (Interzone).

In an alternate ninth century, twelve-year-old Anya and a new friend face a Viking and a tsar to protect the water dragon that saved her life, putting her family's home at risk.

Their magic tree house takes Jack and Annie back to a monastery in medieval Ireland, where they try to retrieve a lost book while being menaced by Viking raiders.

In exile, and hunted by dragons and humans alike, can Hiccup the Viking find the dragon's jewel and save the world from destruction?

Chronicles the adventures and misadventures of Hiccup Horrendous Haddock the Third as he tries to pass the important initiation test of his Viking clan, the Tribe of the Hairy Hooligans, by catching and training a dragon.

It is 922 A.D. The refined Arab courtier Ibn Fadlan is accompanying a party of Viking warriors back to the north. Fadlan belatedly discovers that his job is to combat the terrors in the night that come to slaughter the Vikings-but just how he will do it, Fadlan has no idea....

"Uhtred of Bebbanburg is a man of his word. An oath bound him to King Alfred. An oath bound him to AEthelflAEd. And now an oath will wrench him away from the ancestral home he fought so hard to regain. For Uhtred has sworn that on King Edward's death, he will kill two men. And now Edward is dying. A violent attack drives Uhtred south with a small band of warriors, and headlong into the battle for kingship. Plunged into a world of shifting alliances...

Their magic tree house takes Jack and Annie back to a monastery in medieval Ireland, where they try to retrieve a lost book while being menaced by Viking raiders.