"The Last Templar" is a historical fiction novel by Raymond Khoury that revolves around the mysterious disappearance of the Knights Templar, a medieval Christian military order. The story begins with a dramatic event during a modern-day archaeological dig in New York City, where a group of masked men interrupts the excavation, leading to a series of thrilling events tied to ancient secrets. The plot follows Detective Sean Reilly and Tania as they unravel clues related to the Templars' hidden treasures and their connection to a powerful artifact. As they race against time, they encounter danger and intrigue, exploring themes of faith, loyalty, and the quest for truth.