Dan feels honored when he learns that Upright Citizen’s Brigade is performing excerpts from his book, Inside. Blair tries to prove Serena’s suspicions wrong in order to save their friendship. On her way out of town, Ivy ends up on a collision course with the van der Woodsens.
Elenco: Blake Lively , Leighton Meester , Penn Badgley , Chace Crawford , Ed Westwick , Kelly Rutherford , Matthew Settle , Kaylee DeFer , Jessica Szohr , Kaylee De Fer , Kelly Rutherford , Kristen Bell , Matthew Settle , Michelle Trachtenberg , Taylor Momsen .