Gossip Girl III (20)

Will's (recurring guest star WILLIAM "BILLY" BALDWIN) return to the Upper East Side continues to stir up problems for Serena, Lily and Will's long-standing rival, Rufus. The relationship between Serena and Jenny is strained as a result of Jenny's deception. Blair spends time on the Columbia campus and realizes where she truly belongs. And Dan learns that Vanessa has been keeping yet another secret from him.