Chuck, Blair, Nate, Serena, and Lola team up to infiltrate a secret society meeting at a mansion. They believe a mysterious diary held by Diana Payne contains proof that Bart Bass is still alive.
Fans and critics generally viewed the return of Bart Bass as a polarizing "jump the shark" moment, though it provided a massive cliffhanger for the final episodes of the season. Watch Gossip Girl S05E22
Tensions rise in their relationship as Blair becomes consumed with helping Chuck, leading Dan to feel sidelined and insecure about their future. Chuck, Blair, Nate, Serena, and Lola team up
The investigation leads to the shocking discovery that Bart Bass is alive and has been hiding in a secret room. Tensions rise in their relationship as Blair becomes
In this episode, the core group teams up to uncover a major secret involving Chuck’s father, Bart Bass. The plot centers on a high-stakes mission to a secret club, blending the show's signature melodrama with a "heist-style" investigation. Key Plot Points