Neil Gaiman has long been inspired by ancient mythology in creating the fantastical realms of his fiction. Now he presents his fashioning of the primeval Norse myths into a novel, which begins with the genesis of the legendary nine worlds, delves into the exploits of the deities, dwarves, and giants, and culminates in Ragnarok, the twilight of the gods and the rebirth of a new time and people. Gaiman stays true to the myths while vividly recreating...