Treasure of the Templars — Tim Champlin

It's 1898, and archeology professor Roddy McGinnis is supervising a dig in a medieval dungeon when he unearths the journal of Peter Stirling. A 16th-century Scottish knight, Stirling had died there after being tortured to reveal the location of the gold treasury of the Knights Templar. And now McGinnis has found the map to the treasure's resting place in the New World, where Stirling and a group of knights had been sent to hide it. But, although the ancient order of warrior monks was disbanded, a shadow organization survives. They have a political agenda -- and they want the treasure.