On tonight's all-new Gossip Girl, the great Blair Waldorf seeks to regain her social glory, Jenny Humphrey gets a new crush and Nate Archibald finds romance someplace you would not expect.

But the biggest mystery of tonight involves Serena van der Woodsen.

Her old BFF, Georgina Sparks (Michelle Trachtenberg), will be making her first appearance in "Desperately Seeking Serena," and may possess a secret that threatens to take our girl down.

What could it be? What do you think? What happened in S' past?

Sound off on tonight's Gossip Girl episode before, during and after the show by clicking on the image above or following this link to our forum.

This is the time and place to talk about your favorite Gossip Girl characters, couples, story lines - or whatever you feel like.

Our staff will post its official episode recap to "Desperately Seeking Serena," along with a list of quotes, gallery of photos, music guide and Round Table discussion as soon as possible! Enjoy!

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