This was a pretty good youtube doc about a French Aristocratic family who became reclusive, abused each other, got divorced. Went broke and lost their castle. All because they believed their conman/cult leader was an actual secret agent tasked with protecting them against a grand conspiracy of hitmen trying to assassinate them. He made himself invaluable to them, solving problems at first and played on their self importance.Cults are fascinating as fukk.
Like how do you get a group of grown ass people to join in on your bullshyt? The persuasive powers of a cult leader is powerful.