"A unique combination of carefully researched material and breathless adventure story," Book, Bones & Buffy.

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To what lengths would the Vatican go to suppress the secret origins of its power?

A renowned priest is killed in Rome. A Roman coin is recovered from a wreck off the coast of ancient Judea.

It's up to a young American Jesuit priest and a vivacious, brilliant, female archaeologist to connect these seemingly disparate events and unravel the greatest mystery of all.

Together...