A brave, chivalrous ruler. A magical sword. A mythical castled city. And a round table of noble knights. The story of King Arthur is both an epic tale and a puzzling mystery. What, if any, truth lies behind the legend? Hosts Clive Anderson and Mary-Ann Ochota are on the trail to find out. They examine a 12th-century work that greatly contributed to the myth, written during a time of civil war when Briton needed a hero. They also explore ancient castles, cast spells, wield magical swords, and encounter a real Merlin, to see if there is any truth to the legend.

Clive Anderson and Mary-Ann Ochota test outrageous remedies like leeches, head-drilling, and a pigeon that cures the plague. Plus, Henry VIII's role in Tudor medicine.