YOUTUBE It’s A Dad, Dad, Dad, Dad World AdminOctober 13, 2023034 views 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. source