In 1972 a disgraced college professor and a retired FBI agent set out to discover, once and for all, the final resting place of the legendary Treasure of the Knights Templar. Days later, both men disappear without a trace. Forty years later, spurred on by the discovery of a long lost manuscript, the Professor's son hires historians Paul Davenport and Sara Walsh to pick up where his father left off. Their adventure leads them from Benjamin Franklin's Freemasons to the early days of the Civil War, from World War II Paris to the corrupt world of J. Edgar Hoover's FBI. But Davenport and Walsh aren't alone in their search. A fanatical group of Neo-Knights have infiltrated the Freemasons in an attempt to reignite the Crusades. And watching them all from the shadows is a mysterious figure known as The Bookkeeper. From the Capitols of old world Europe to a remote estate on the coast of Canada, to a small town in Pennsylvania, Davenport and Walsh discover kidnapping and murder, and go from hunters to prey as they get closer and closer to the secrets of The Templar Succession.