The Three Card Monte also known as Find the Lady, is a classic con game in which the victim, is tricked into betting money, on the assumption that they can find the money card among three face-down playing cards. This trick is usually accomplished by difficult sleight-of-hand, but the enclosed version is really very simple.
Three cards are shown - an Ace, a Two and a Three. The cards are fairly shown with the spectator being asked to follow the Ace. Each time the cards are turned, the Ace is in a different position. Finally the Three is eliminated but in the end it turns out to be the Ace!