Rip deal

The Rip Deal is a swindle very popular in Europe and is essentially a pigeon drop confidence trick. In a typical variation scammers will target, say, a jeweler, and offer to buy some substantial amount of his wares at a large markup provided he perform some type of under-the-table cash deal, originally exchanging Swiss francs for euros. This exchange goes through flawlessly, at considerable profit for the mark. Some time later the scammers approach the mark with a similar proposition, but for a larger amount of money (and thus a larger return for the mark). His confidence and greed inspired by the previous deal, the merchant agrees -- only to have his money and goods taken, by sleight-of-hand or violence, at the point of exchange. This scam was depicted in the movie Matchstick Men.