The Outsiders Gambit

ANCIENT SECRETS THREATEN THE MODERN WORLD, AND THE HISTORIC CRIMES UNIT IS OUR ONLY HOPE

When Dr. Dan Kotler--Archaeologist and FBI Consultant--gets an invitation to explore the Huashan mystery caves, located in China's Anhui Province, it's an offer too good to pass up. Especially since the lead on the project has promised him some "unusual, out of place history" to investigate. It's the closest thing to a vacation Kotler ever seems to take.
But what Kotler finds hidden in those caves is more...