Rattlesnake Crossing (Joanna Brady Mysteries, Book 6)

Death has come to Bisbee, Arizona, and shattered the small desert town's fragile peace. A gun dealer has died violently, and his stock of high-powered weapons has been cleaned out. Suspicion falls upon an armed separatist at war with the federal government and the local law. Although Sheriff Joanna Brady suspects the solution is not so simple, the toll on her private life may be more than she can manage.