"The Witches of Bushwick"  (Season 4 | Episode 9)  43:0
Chuck hosts a "Saints and Sinners" masquerade party at the Empire. Dan and Nate don't know what to make of Serena's mixed messages. Blair sets her sights on becoming the new face of Anne Archibald's foundation for girls, but Anne is concerned about Blair's relationship with Chuck.
Original Air Date: 11/15/2010