Gossip Girl Season 3 Episode 20 (Gossip Girl s03e20) with title “It’s a Dad, Dad, Dad, Dad World” airs on Monday, May 3rd 2010. In this 20th episode, you can watch Will’s return to the Upper East Side continues to stir up problems for Serena, Lily and his long-standing rival, Rufus. Meanwhile, Serena and also Jenny’s relationship is strained as a result of Jenny’s deception.