Gossip Girl

Serena has gone missing and Chuck and Blair make a promise to each other about their relationship. MICHELLE TRACHTENBERG, BARRY WATSON guest star.

Serena hosts a big gala, Blair prepares to debut her new fashion line and Dan must decide if he sacrifices his integrity to get his work published.

Feeling the pressure to make her first Waldorf Designs fashion show a success, Blair must rely on help from an unlikely source.

Chuck's investigation into his father's dealings leads him to an unlikely event with Manhattan's elite.

Eleanor gives Blair an ultimatum; Serena worries about Steven's attitude toward her; Dan publishes another article.

With Ivy's help, Chuck discovers there is evidence incriminating his father and enlists Nate to help retrieve it

Serena and Dan decide to make amends with those they have wronged. Chuck is close to getting the evidence he needs against his father.

What's Thanksgiving without a side of drama? Serena and Dan throw their first Thanksgiving together, but everyone seems to havetheir own agenda.

After a run-in with Bart, Blair is concerned for Chuck's safety and devises a plan with Serena, Georgina and Sage.

Gossip Girl's identity is finally revealed.

The Gossip Girl cast and producers look back at the show's many unforgettable moments.