We've already seen the promotional photos - and posted some Gossip Girl season 6 spoilers - but now the CW has released the episode synopsis for the second installment of the season, "High Infidelity."

It reads:

• Trying to prove herself in adult society, Serena hosts the Central Park Conservancy’s big gala, of which she is now the newest Board Member, and she and Nate  both learn something shocking about their significant others.
• Blair prepares to debut her new fashion line, but a rival from her past holds the key to her future.
• With the help of Georgina, Dan lands some meetings with publishers, but he must decide if he is willing to sacrifice his integrity in order to get his work published.
• Meanwhile, Chuck tries to persuade Amira (guest star Andrea Gabriel) to help him look into his father’s past, even if it means jeopardizing Lily and Bart’s relationship.

Barry Watson guest stars as Steven and Sofia Black-D'Elia debuts as Sage.

Check out our photo gallery from the episode, airing Monday, October 15, and share your comments on it below. Gossip Girl Season 6 begins a week from Monday!

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.