Gossip Girl (2007): Season 4, Episode 17

4 - 17: Empire of the Son

Unresolved issues between Ben and Serena come to light when his mother visits. Meanwhile, Russell puts his relationship with Raina at risk by using personal information to blackmail Lily in order to destroy Chuck's family legacy. Russell tells Chuck a devastating secret about his father. Dan and Blair's relationship continues to build. Nate and Raina explore their feelings for each other. Lily prepares to face legal consequences for her part in Ben's false imprisonment. Also, William van der Woodsen makes his return to the Upper East Side.