Peter Williams recalls the story of a pickpocket who is tricked by a counterfeiter. The pickpocket is being approached by a gentleman who claims to be a scientist and invites him to dinner. They go to a restaurant and have a large dinner. The pickpocket manages to steal the scientist's wallet. The scientist, however, leaves the table just before the bill arrives. When the pickpocket wants to settle the bill with the stolen money, it turns out that all the banknotes are counterfeit - and the pickpocket is arrested.