3. The Knights Templar

What Is It:
As made famous by books such as the Da Vinci Code, The Knights Templar, a crusader organization, dates back to 1118, but in the early 1300s, members were arrested and tortured in France on charges of devil worship. Dozens were burned at the stake for treason.

Famous Knights Templar:

Hugh de Payens
Odo de St. Amand
Philippe de Milly
A ton of other medieval French knights

Why You Should Join:
According to historians, the Knights Templar vanished 700 years ago, after being accused of spitting on the cross and committing homosexual acts. But did they really vanish? Conspiracy theories claim that the Knights Templar guard the Holy Grail, the Ark of the Covenant, and other religious artifacts.