A stranger leaves Ian a bequest that starts him on a search which begins five hundred years earlier and takes him further back in time until his hunt leads him to TeotihuacA n in Mexico. However, even Ian didn't realize where his search would finally lead him as he and Mac dig beneath an ancient palace. They discover a pair of skeletons who are guardians to a goddess and a crystal spider that takes them on yet another journey. All the time they are being stalked by a man who believes he has been cheated out of his inheritance. This is the third paperback in this series.