The Talking Templars duo investigate the origins of the Knights Templar. This brotherhood of holy warriors was created around the year 1118 in Jerusalem at the height of the Crusades. Contemporary chroniclers described the new order as a kind of security service for pilgrims visiting the Holy Sepulchre. But over the centuries, myths and legends have developed about the origins of the Templars. In our own time, it's been claimed that shadowy organisations with names like the Priory of Sion or Rex Deus conjured the Knights Templar into existence. Academic author Dr Steve Tibble, ever the sceptic, pores cold water on these conspiracy theories. TV historian Tony McMahon wonders how they came about. Let the investigation begin!