The dissolution of the Order of the Temple and the persecution of the Knights Templar are still fresh in people's minds. Why did King Philip the Fair and Pope Clement V set out to destroy them? What secrets did the Knights Templar hold? Just as the Da Vinci Code revealed the existence of the Order of the Priory of Sion and left its mark on the world, Jean-Patrick Pourtal takes you on an investigative journey from the 14th century to the present day. The author develops his hypotheses on the historical implications of the Knights Templar, mixing royal dynasty and hidden messages. He returns to mythical sites such as Arginy, Gisors and Rennes-Le-Château, and meets the characters who were instrumental in bringing about the so-called Templar resurgence.