Below is a revised, slightly longer synopsis of the next episode of Gossip Girl from the CW. "The Age of Dissonance" airs two weeks from tonight on Monday, March 16:

The seniors put on a production of “The Age of Innocence” / actor Sebastian Stan (Kings) returns as Carter Baizen - The Constance Billard and St. Jude seniors put on a production of “The Age of Innocence” and find their personal lives mirroring conflicts in the play.

Meanwhile, Serena (Blake Lively) develops a crush on the play’s director, Julian (guest star Harmon Walsh), and enlists Vanessa’s (Jessica Szohr) knowledge of theater to help her get the otherwise uninterested guy’s attention.

Blair (Leighton Meester) receives devastating news about her future that leads her on a witch-hunt for the person responsible.

Dan (Penn Badgley) and Rachel (guest star Laura Breckenridge, above) agree to stay away from each other in the aftermath of being discovered as more than teacher and student, but ultimately find it impossible to keep that promise.

Chuck (Ed Westwick) enlists help from an unlikely source, his nemesis Carter Baizen (Sebastian Stan). Chace Crawford, Taylor Momsen and Matthew Settle also star.

Click here to check out our photo gallery from the episode!

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