"Memoirs of an Invisible Dan." You have to give Gossip Girl credit for these episode names, week after week. In the case of the October 17 installment, it's actually a descriptive title, not just funny!

After much deliberation, Dan decides to gather Serena, Blair, Nate, Chuck, Rufus and Lily to reveal the truth about his book in the fourth episode of Season Five (the second airs tonight at 8 EST).

He hopes that they will support him at his book party. But will they?

It may not be that simple. Blair and Louis reach a crisis point after Louis reads Dan's book, and elsewhere, Diana learns incriminating information about one of Nate's friends and uses it to her advantage.

Tonight's episode is "Beauty and the Feast" (see photos and videos). Next Monday's is "The Jewel of Denial" (see photos). Click to enlarge photos from "Memoirs of an Invisible Dan" here:

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