C.M. WENDLEBOE. Death on the Greasy Grass A Spirit Road Mystery. Berkley. Paperback, 373 pages, $16, amazon.com

FBI agent Manny Tanno is taking some much needed R and R at the site of the Battle of Little Big Horn. But when a battle reenactor is killed right in front of him on the reservation, Manny cuts his vacation short and soon learns that the secrets of the past have a way of stirring up trouble in the present.