Upon returning to New England after a long hiatus overseas, Prof. David Manning quickly finds himself involved in yet another extraordinary archaeological adventure---one 500 years in the making. Drawn into an investigation of a mysterious and brutal murder in the desert country of West Texas, his determined effort to find the perpetrators sets him on the hunt for a lost Aztec treasure beyond all imagining. Both are inextricably entwined. Pitted against a ruthless, multi-millionaire descendant of one of the original conquistadors---a man who will stop at nothing to gain the prize---Manning finds himself contending at every turn with an array of cold-blooded killers, all equally unwavering in their desire to see him dead. *3rd Adventure of Professor David Manning