After a few harrowing months of stumbling through catacombs beneath a New Orleans cemetery, evading alligators at Bayou Teche, and dodging a band of fanatics searching for a crystal skull and torching rap clubs, Tony Boudreaux figures he deserves a rest. So when a San Antonio client offers a ten thousand dollar retainer to find a priceless map hidden in his deceased father's den, Tony takes the job. He enjoys the ambience of the city and the exotic venue of the River Walk. To his dismay, the simple task of finding a hidden map explodes into a series of attempts on his life and two murders with over a half dozen suspects, all of whom stood to gain from the map rumored to have been ancient even in the time of Alexander the Great.