Eaters of the Dead:

The Eaters of the Dead is a brilliant, stirring tale of historical adventure which deserves a place on readers bookshelves alongside Michael Crichton's bestselling techno-thrillers. It is AD922 and Ibn Fadlan is sent north from Baghdad as a peaceful ambassador. But before he reaches his destination, he falls in with some Vikings and when they are attacked by mystical bloodthirsty creatures in the midst of a terrible fog, he reluctantly agrees to become the prophesied 13th warrior in order for them to survive. Later turned into a major Hollywood film, Eaters of the Dead is an imaginative and breathlessly exciting retelling of the Beowulf myth that rescues the story from dry academic analysis and resurrects it as an action-packed story of adventure.