Episode 1 | Summer Kind of Wonderful

Gossip Girl heads to the Hamptons as summer comes to a close; Serena and Nate fake a relationship as a cover for Nate's affair with a married woman.

Episode 2 | Never Been Marcused

Blair is thrilled to be dating royalty, but a scheming Chuck has other plans for her; Serena and Dan agree to keep their recent hookups a secret.

Episode 3 | The Dark Night

Serena and Dan must deal with their problems while trapped in an elevator; Blair and Chuck question the lack of passion in their relationships.

Episode 4 | The Ex-Files

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. Vanessa also enlists Blair's help when she finds out a scandalous secret about Catherine.

Episode 5 | The Serena Also Rises

Blair sabotages her mother's show at Fashion Week; Dan starts hanging out with Chuck, and learns that a walk on the dark side always has risks.

Episode 6 | New Haven Can Wait

Serena decides to visit Yale and gets even with Blair. Dan learns that none of his recommendation letters made it to Yale.

Episode 7 | Chuck in Real Life

Blair seeks revenge by enticing Chuck to seduce Vanessa; Serena rebels at a party of Lily's; Dan and Jenny find out a secret Nate has been hiding.

Episode 8 | Pret-a-Poor-J

Jenny befriends a model, and is encouraged to explore her wild side; Serena is attracted to an artist, Aaron Rose.

Episode 9 | There Might be Blood

Serena realizes Aaron has kept a secret from her; Jenny and Agnes plan a guerilla fashion show; Blair baby-sits the daughter of a Yale donor.

Episode 10 | Bonfire of the Vanity

Dan tries to get close to Bart Bass to possibly write an exposé, but things get heated when Chuck finds out.

Episode 11 | The Magnificent Archibalds

Blair's favorite Thanksgiving traditions are ruined by her mother's new boyfriend; Serena doesn't tell Aaron about her past -- but Dan does.

Episode 12 | It's a Wonderful Lie

The teens prepare for the annual Snowflake Ball, a charity event for prep school seniors.

Episode 13 | O Brother, Where Bart Thou?

A sudden and tragic event impacts the lives of everyone on the Upper East Side, especially Chuck and the van der Woodsens.

Episode 14 | In the Realm of the Basses

Chuck's uncle, Jack Bass, arrives on the scene; Jenny returns to school and takes on the mean girls.

Episode 15 | Gone with the Will

Bart's will is read and everyone learns the fate of the Bass empire; Dan discovers the secret between Rufus and Lily.

Episode 16 | You've Got Yale!

The seniors try to find out who is worthy of an early admission to Yale; Chuck pairs up with an unlikely ally in his war with Jack over Bass Industries.

Episode 17 | Carrnal Knowledge

Blair comes up with a plan to get revenge on her teacher; Chuck wakes up in a hotel and tries to piece together what happened the night before.

Episode 18 | The Age of Dissonance

The seniors put on a production of "The Age of Innocence"; Chuck enlists help from an unlikely source -- his nemesis, Carter Baizen.

Episode 19 | The Grandfather

Devastated by the recent plot twist in her life, Blair turns her back on her predictable existence in favor of a wilder lifestyle.

Episode 20 | Remains of the J

Serena throws Jenny a party for her 16th birthday, but things get out of control when Poppy Lifton turns the small gathering into a huge social event.

Episode 21 | Seder Anything

Serena returns from her trip to Spain with Poppy and Gabriel; Blair makes a secret deal with Nate's grandfather; Dan gets a job.

Episode 22 | Southern Gentlemen Prefer Blondes

Georgina returns; Chuck and Nate are at a crossroads in their friendship -- a result of their mutual interest in Blair.

Episode 23 | The Wrath of Con

Blair pressures Georgina to help her in a scheme; Nate and Chuck's rivalry over Blair comes to a head; Lily hatches a secret plan to help Rufus.

Episode 24 | Valley Girls

To prove her independence, Serena refuses to leave jail with her mother or her grandmother; Rufus is furious with Lily for having Serena arrested.

Episode 25 | The Goodbye Gossip Girl

Gossip Girl livens things up at graduation by sending out a shocking email blast during the ceremony.