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.

Uhtred is a Saxon, cheated of his inheritance and adrift in a world of fire, sword, and treachery. He has to make a choice: whether to fight for the Vikings, who raised him, or for King Alfred the Great of Wessex, who dislikes him. In the late ninth century, Wessex is the last English kingdom. The rest have fallen to the Danish Vikings, a story told in The Last Kingdom, the New York Times bestselling novel in which Uhtred's tale began. Now the Vikings...

In the middle years of the ninth century, the fierce Danes stormed onto British soil, hungry for spoils and conquest. Kingdom after kingdom fell to the ruthless invaders until only one realm remained. Suddenly the fate of all England--and the course of history--depended upon one man, one king.

Follows the further adventures and misadventures of Hiccup Horrendous Haddock the Third as his Viking training continues and his father leads a stranger and the Hairy Hooligans to the Isle of Skullions in search of a pirate's treasure.

Uhtred of Bebbanburg a man of his word, an oath bound him to King Alfred and another to Aethelstan. Now an oath will wrench him away from his ancestral home, for he has sworn that on King Edward's death, he will kill two men, and Edward is dying. A violent attack drives Uhtred south with a band of warriors, and headlong into the battle for kingship. Plunged into a world of shifting alliances and uncertain loyalties, he will need all his strength to...

Someone has stolen the Fire Egg. Now the Volcano on Volcano Island is active and the tremors are hatching the eggs of the Exterminator dragons! Can Hiccup return the Fire Egg to the Volcano, stop the Volcano from erupting, and save the Tribes from being wiped out by the terrible sword-claws of the Exterminators.

Reluctant hero Hiccup Horrendous Haddock III must rescue his best friend, Fishlegs, from the deadly disease Vorpentitis. The only cure is rare and almost impossible to find ... a potato. But where will Hiccup find such a thing?

"The final installment in Bernard Cornwell's bestselling Saxon Tales series, chronicling the epic story of the making of England. England is under attack. Chaos reigns. Northumbria, the last kingdom, is threatened by armies from all sides, by land and sea, and only one man stands in their way. Torn between loyalty and sworn oaths, the warrior king Lord Uhtred of Bebbanburg faces his greatest ever battle -- and prepares for his ultimate fate." -- Provided...