In 1898, a Minnesota farmer clearing trees from his field uprooted a large stone covered with mysterious runes. Now known as the Kensington Rune Stone, it details a journey of land acquisition and murder in the year 1362. Thought by some to be a hoax, new evidence suggests it could be real, and a clue that the Knights Templar discovered America 100 years before Columbus, perhaps bringing with them history’s greatest treasure...The Holy Grail.