The Hunt for the Book of Secrets (The Last Templars #4)

Doc Holiday and his team mistakenly think their mission is accomplished when they alert President Prescott of the return of a deadly enemy they once thought they’d seen the last of.

But then they learn the president fears his “Book of Secrets” may never be seen again. This time, there’s no need to summon “The President’s Dozen.”

They—and a couple of new members (and a pair of familiar allies)—are already up to their necks in danger when the mysterious and deadly threats are identified and understood.