Quest for Valhalla

Book 3 of the "The VIKINGS! Trilogy":
To save two companions from terrible fates, the companions pass through a mystical portal into the lands of the Norse Gods. However, the portal proves to be one-way, and drops them onto the roots of Yggdrasil, the legendary Norse Tree of Life. Trapped, they seek to save one companion, tracing his footsteps to Niflhiem, realm of Hel, the Norse Goddess of Death. Hel welcomes and befriends them, promising them gifts that only a goddess could give ... intending to keep them forever. Unwilling to suffer eternity in the Land of the Unfortunate Dead, the companions betray Hel and steal her newest subject. Chased by Hel and her father, Loki, they race through all the realms of Norse Mythology. In Nidavellir, they're captured by a letcherous, greedy dwarf. In Svartalfhiem, the dark elves deny them admittance ... unless one of them can defeat a champion swordmaster with centuries of experience. In Jotunhiem, they face Heid, the Gleaming One, and Utgard-Loki, King of the Giants, who humilated both Thor and Loki. Can they reach the Gates of Valhalla without losing not only their lives but their souls? The dooms of three universes balance upon the fate of one Viking warrior!