Sheriff Walt Longmire is enjoying a bear when a younger sheriff shows him a photograph of twenty-five armed men standing in front of a Challenger steam locomotive. It transports him back to a time when, fresh from the battlefields of Vietnam, then-deputy Longmire accompanied his boss Lucian Connally to the annual Wyoming sheriff's junket held on the excursion train known as the western Star. armed with his trusty Colt .45 and a paperback of Agatha Christie's Murder on the Orient Express, the young Walt was ill-prepared for the machinations of twenty-four veteran sheriffs, let alone the cavalcade of curious characters that accompanied them. Book #13, 295 pages, soft cover. ISBN 9780143109136.