In the episode's climax, Chuck and Bart face off on the roof of the Empire Hotel. During a physical struggle, Bart falls over the edge and hangs on for his life. Chuck and a frantic Blair watch as Bart eventually loses his grip and falls to his death.

After weeks of psychological and financial warfare, the conflict between Chuck and Bart reaches a breaking point. Blair Waldorf, fearing for Chuck's life as Bart becomes increasingly paranoid and dangerous, assembles "The Revengers"—a team including Serena, Dan, Nate, Georgina, and Sage—to finally take Bart down.

This episode is pivotal because it removes the show's primary antagonist, allowing the final episode, "New York, I Love You XOXO," to focus entirely on the core characters' futures and the long-awaited identity of Gossip Girl. It is often remembered for its darker, more "thriller-esque" tone compared to the typical Upper East Side drama. Gossip Girl: Season 6, Episode 9 - Rotten Tomatoes

Nate’s attempt to help Chuck leads him into deep water when he is arrested for falsifying The Spectator’s records—a trap set by Bart.

Fearing they will be implicated in the death, Blair and Chuck flee the scene, setting the stage for their impromptu wedding and the big reveal in the series finale. Why It Matters

" The Revengers " is the penultimate episode of (Season 6, Episode 9), serving as the high-stakes lead-up to the series finale. It originally aired on December 10, 2012, and centers on the final, lethal showdown between Chuck Bass and his father, Bart Bass. Episode Summary