With the importance of contracts in the merchant class, this moment in the play is especially pivotal. It's here that we witness a break in contract. For these merchant characters and within this sentimental genre, a contract goes beyond just economic agreement; for they hold an emotional tie as well. The moment that Barnwell chooses to murder his Uncle, he ends his contractual duties working for him, but more importantly -- especially to this genre-- he chooses to break their emotional bond as well. While the play highlights an abundance of contracts happening between different characters, this moment stood out to me because it is the biggest moment that goes against that theme. Thus, the truest representation of immoral behavior that Barnwell displays, the clearest moment we see him go against all he knows and all that's good.