The Western Territories, 1880. For four years,Civil War veteran and former U.S. Cavalry CaptainJonas P. Hollister has been rotting in a prison cell at Fort Leavenworth, Kansas. His crime: lying about the loss of eleven soldiers under his command . . . who he claims were slaughtered by a bandof nonhuman, blood-drinking demons. But now a famous visitor, the detective Allan Pinkerton, has arriv…