I picked this up thinking it would be a grea, exciting romp, but what I got instead was much better! I'm no Erik Graff but I found these authors to be able researchers, weighing all the possibilities fairly and cogently (not jumping to conclusions because of an exciting or preferred explanation), and describing the progress of the expeditions very well with an admirable precision. The association of the Old Testament's Melchizedek with the scribe of the Egyptian gods, Thoth and the clarification of the grail probably being tablets rather than the Passover cup and it's connection to the mystery was intriguing. When I become curious about the paranormal and other unexplained mysteries, I will definitely return to this husband-wife team. Highly recommended for clarity, logic, detail and combinatorial-learned grasp of what's at hand.