Gossip Girl (2007)

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 gala to prove herself in adult society.

Blair relies on help from an unlikely source.

Georgina urges Dan to choose a date.

Eleanor gives Blair an ultimatum.

Unexpected emotions arise as Serena volunteers to help Dan.

A close ally reveals Chuck's plan to bring down his father.

Serena and Dan throw their first Thanksgiving together.

Blair is concerned for Chuck's safety and devises a plan.

In a fashionable farewell to remember, our favorite Upper East Siders join forces for one last soiree, and the shocking identity of Gossip Girl is finally revealed.