播出日期：美國時間 Mon 20 Oct.
Vanessa uses the scandalous picture of Catherine and Marcus to force Blair to do some charity stuff. However, it is absolutely not a good idea. The impetuous offending behaviour leads to that Blair seeks revenge by provoking Chuck to seduce Vanessa. Nevertheless, Chuck seems puzzled. In the Basses, Lily and Bart expect their children could make them proud in front of the press in a extravagant housewarming party. Although, rebellious Serena obviously does not want to obey their rules. Meanwhile, apart from the party, a rift comes up to the beginning friendship between Nate and Dan. In a word, it is a serious episode.