In the midst of the largest motorcycle rally in the world, a young biker is run of the road and ends up in critical condition. When Sheriff Walt Longmire and his good friend Henry Standing Bear are called to Hulett, Wyoming, to investigate, things start getting complicated. as competing biker gangs, the Bureau of Alcohol, Tobacco, and Firearms, and Lola, the real-life femme fatale and namesake of Henry's '59 Thunderbird, come into play, it rapidly becomes clear that there is more to this year's Sturgis Motorcycle Rally than a bike accident. Book #12, 317 pages, soft cover. ISBN 9780143109129.