The Lesson - S2-E3
Plot hole: At the end of the episode Trevor Speed sits with his face in his hands looking like the world has stopped turning. In fact he has just sold a worthless plot of land for £450,000. Okay, he was conned out of £150,000 of that by the grifters, but he is still £300,000 up. A grifter like him would be over the moon - he is used to taking elderly ladies for the occasional short con making him £80 or so. He's just won the lottery. He'd be happy.
Plot hole: At the end of the episode Stacie says that she has cashed the bank draft used to purchase the forged comic book artwork. Not a chance. The auctioneers establish that the artwork is a forgery within minutes of the sale going through and they would be onto their bank immediately ensuring a stop order was put on the draft. Bank cheques and drafts can be stopped after issue - it happens all time. In fact, simply by presenting the draft Stacie has opened herself up to a world of legal problems - the bank's computers are going to light up like a Christmas tree and the police will be there within minutes.