"Kevin Hearne creates the ultimate Atticus O'Sullivan adventure in the grand finale of the New York Times bestselling Iron Druid Chronicles: an epic battle royale against the Norse gods of Asgard. Unchained from fate, the Norse gods Loki and Hel are ready to unleash Ragnarok, a.k.a. the Apocalypse, upon the earth. They've made allies on the darker side of many pantheons and there's a globe-spanning battle brewing that ancient Druid Atticus O'Sullivan...