The CW has released photos and the synopsis for the fourth episode of Gossip Girl's final season.

What can we expect in "Portrait of a Lady Alexander," airing Monday, October 29? Let's find out:

Chuck’s continued investigation into his father’s dealings leads him to an unlikely event with Manhattan’s elite, where he hopes to find the one person who can tell him the truth about Bart.
Serena and Steven decide to reveal their romantic histories so they aren’t surprised by anything, but neither was prepared for what they uncovered.
With The Spectator in jeopardy after Dan decided to publish elsewhere, Nate must make a difficult decision to keep it in business.
Georgina pushes Dan to choose a worthy person to date to boost his image, but he finds himself drawn in a different direction.

Gossip Girl returns Monday with "High Infidelity," followed by "Dirty Rotten Scandals" October 22 and then this installment. Click to enlarge images from the episode and share your comments below: