Gossip Girl Photo Preview: "The Big Sleep No More"

We've already heard plenty about the November 14 episode of Gossip Girl, a.k.a. the semi-annual mask-themed episode of the CW series. Now we have an official synopsis and photos for you.

The Upper East Siders attend a performance of Punchdrunk’s provocative NYC theater experience, “Sleep No More,” which translates to masks, anonymity and some surprising romantic twists.

Meanwhile, Diana sets her sights on Serena in her continuing quest to ruin Gossip Girl, and Dan is on his book tour, but things aren’t exactly as they appear to Lonely Boy's friends and family.

Anytime the show introduces the element of disguise (which it does with surprising frequency), that raises the sexual tension and duplicity to even higher levels ... for a show already built on both.

Will Chuck and Blair kiss? Will Gossip Girl be exposed? Will Charlie be exposed? Will we finally learn the true identity of the man who fathered the future son or daughter of Blair Cornelia Waldorf?

Whatever happens, executive producer Josh Safran promises it will be significant - and potentially dark. "They’re dealing with adult issues. It’s sort of a big turning point episode for everybody.”

Click to enlarge photos from the episode and leave comments below ...

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