Episode Summary: As the summer of the Upper East Siders comes to a close, Blair returns from her summer trip to Europe with a charming new boyfriend, named James, just to make Chuck jealous when she takes him to the Hamptons to spend the last few weeks of the summer with her.
Season 2, Episode 2: Never Been Marcused
Episode Summary: As Blair struggles to adjust herself to her British boyfriend, Lord Marcus Beaton's ways, he introduces her to his parents, where the identity of Lord Marcus' mother is revealed.
Season 2, Episode 3: The Dark Night
Episode Summary: Serena and Dan are trapped in an elevator during a citywide blackout which makes them trying to work out their differences. Meanwhile, Marcus and Blair have problems of their own which is passion.
Season 2, Episode 4: The Ex-Files
Episode Summary: When Dan starts getting cozy with Amanda, the new girl at school, Serena turns to Blair and her minions to step in to sabotage her chances.
Season 2, Episode 5: The Serena Also Rises
Episode Summary: As Gossip Girl narrates the so-called Fashion Week where the students of the Upper East Side gather for the annual fund raiser, Blair becomes angry with her mother when she gives Serena and her new socialite friend, Poppy Lifton, front row seats to the Eleanor Waldorf Fashion Show.
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Season 2, Episode 6: New Haven Can Wait
Episode Summary: Serena decides to visit Yale and gets even with Blair.
Season 2, Episode 7: Chuck in Real Life
Episode Summary: Vanessa begins her own slide on a dark path when she tries to blackmail Blair into being a nicer person, with the photos she took of Catherine and Marcus. Blair then seeks revenge by convincing Chuck to try to seduce Vanessa to steal her phone camera.
Season 2, Episode 8: Pret-a-Poor-J
Episode Summary: Jenny has a new young model friend, named Agnes, who encourages Jenny to explore her wild side, and also to confront Eleanor Waldorf who is planning to steal Jenny's designs in order to pass them off as her own.
Season 2, Episode 9: There Might be Blood
Episode Summary: Serena invites Aaron to be her guest at a charity gala honoring Lily and Bart, but after discovering a secret that Aaron has been keeping from her, Serena begins to question whether Aaron is the guy she thought he was.
Season 2, Episode 10: Bonfire of the Vanity
Episode Summary: Blair is against the idea of her mother, Eleanor, with a new man in her life, named Cyrus Rose, and she in her natural and evil ways, does everything in her power to make it impossible for them to be together by trying to break them up when Cyrus throws Blair a party for her 18th birthd.
Season 2, Episode 11: The Magnificent Archibalds
Episode Summary: As Thanksgiving draws near, Blair looks forward to spending the holiday with her family. But her disappointment only begins when her father, Harold, is delayed in trying to leave Europe, and Eleanor's new boyfriend, Cyrus, takes over planning the traditional Thanksgiving feast.
Season 2, Episode 12: It's a Wonderful Lie
Episode Summary: The teens prepare for the annual Snowflake Ball, a charity event for prep school seniors.
Season 2, Episode 13: O Brother, Where Bart Thou?
Episode Summary: The entire Upper East Side of Manhattan is rocked when Bart Bass dies suddenly in a limo accident. Serina and Eric takes the news very calmly while Lily has a troubling time despite her mother, Cece's, awkward attempts to comfort her.
Season 2, Episode 14: In the Realm of the Basses
Episode Summary: Because Chuck has been missing since his father's funeral, his Uncle Jack, Bart's younger brother, arrives in New York to help Lily find and help him.
Season 2, Episode 15: Gone with the Will
Episode Summary: At the reading of Bart Bass' will, Chuck is bequeathed the majority share of Bass Industries, but Jack soon manipulates Chuck into giving him the company. Chuck decides to take over the company after being persuaded by Blair.
Season 2, Episode 16: You've Got Yale
Episode Summary: Serena, Blair, Dan, and the rest of the seniors try to find out who is worthy of an early admission to Yale. Serena discovers that she has been accepted, but concedes the acceptance to let Blair take the position because of what Blair will do as a result.
Season 2, Episode 17: Carnal Knowledge
Episode Summary: The twisted Blair plans a cruel revenge against her teacher, Rachel Carr, for her one bad grade, but has problems getting her posse of mean girls to rally for support since they are not keen to taking on a teacher.
Season 2, Episode 18: The Age of Dissonance
Episode Summary: As Constance Billiard prepares for the annual school play of 'Age of Innocence' the frantic production threatens to break the whole school apart as, Dan continues to ignore Serena and continue his dirty tryst with Rachel Carr.
Season 2, Episode 19: The Grandfather
Episode Summary: Devastated by the recent plot twist in her life, Blair turns her back on her predictable Waldorf existence in favor of a wild, unpredictable lifestyle that includes Carter, causing Serena and Chuck to have serious concerns about their friend.
Season 2, Episode 20: Remains of the J
Episode Summary: Serena decides to throw Jenny an intimate party for her 16th birthday, but things get out of control when Serena's friend Poppy Lifton, returns and turns the small gathering at the van der Woodsen apartment into a huge social event.
Season 2, Episode 21: Seder Anything
Episode Summary: Serena returns from her week-long trip to Spain with Poppy and Gabriel. But Serena becomes worried that during the hard partying in the country, she thinks she may have gotten married to Gabriel by accident.
Season 2, Episode 22: Southern Gentlemen Prefer Blondes
Episode Summary: Georgina Sparks returns to the Upper East Side after undergoing a major transformation from a born-again Christian camp. Chuck and Nate find themselves at a major crossroads in their relationship as it pertains to their mutual interest in Blair.
Season 2, Episode 23: The Wrath of Con
Episode Summary: Blair pressures Georgina into making amends for her past bad behavior by helping her in a scheme to rip off Poppy after she has embezzled all of the investment money that she and Gabriel claim to invest in. Meanwhile, the rivalry between Nate and Chuck over Blair comes to a head.
Season 2, Episode 24: Valley Girls
Episode Summary: Lily recalls her past when in a flashback to 1983, the naive and sheltered 17-year-old Lily Rhodes got kicked out of her Santa Barbara boarding school.
Season 2, Episode 25: The Goodbye Gossip Girl
Episode Summary: Gossip Girl decides to liven things up at the Constance Billard and St. Jude's graduation by sending out a shocking and damaging email blast in the midst of the commencement ceremony, stirring Serena to come up with a plan of attack.