4.19: "Petty in Pink"
Writer: Amanda Lascher
Director: Liz Friedlander

Serena (Blake Lively) enlists Charlie (guest star Kaylee DeFer) to go undercover Gossip Girl-style to determine why Dan (Penn Badgley) and Blair (Leighton Meester) are spending so much time together, and what role an unexpected visitor is playing in their lives. With Nate’s (Chace Crawford) help, Raina (guest star Tika Sumpter) decides to go on a search for her long-lost mother. Chuck’s(Ed Westwick) hopes about his legacy are dashed with the reveal of devastating information from the past. Jessica Szohr, Kelly Rutherford and Matthew Settle also star.

4.20: "The Princess and The Frog"
Writer: Leila Gerstein
Director: Andrew McCarthy

IT’S WAR BETWEEN SERENA AND BLAIR — Blair’s (Leighton Meester) dreams appear to be coming true, but Serena (Blake Lively) threatens to jeopardize it all by dredging up Blair’s past. Charlie (guest star Kaylee DeFer) befriends Vanessa (Jessica Szohr), who may or may not have a hidden agenda. Nate (Chace Crawford) is torn between his relationship with Raina (guest star Tika Sumpter) and a truth he must keep hidden out of loyalty to Chuck (Ed Westwick). Jessica Szohr, Kelly Rutherford and Matthew Settle also star.

4.21: "Shattered Bass"
Writer: Sara Goodman
Director: Allison Liddi-Brown

JACK BASS (GUEST STAR DESMOND HARRINGTON) RETURNS TO THE UPPER EAST SIDE — Charlie (guest star Kaylee DeFer) is finally starting to feel less like a fish-out-of-water with Serena (Blake Lively) and her friends, but complications present themselves when Charlie is invited to attend the Constance Billard alumni fundraiser. On the road to “happily ever after,” Blair (Leighton Meester) finds herself torn between the men in her life. Jack Bass’ (guest star Desmond Harrington) return to the Upper East Side sets off a chain of events that could end up destroying Chuck (Ed Westwick) and those closest to him. Jessica Szohr, Kelly Rutherford and Matthew Settle also star.

4.22: "The Wrong Goodbye"
Writer: Joshua Safran
Director: Patrick Norris

WILL BLAIR CHOOSE HER PRINCE OR HER DARK KNIGHT? — Season four wraps up with an explosive finale, including the return of Georgina Sparks (guest star Michelle Trachtenberg)and Constance Billard mean girls Kati and Is (guest stars Nan Zhang and Nicole Fiscella), a cameo by “Gossip Girl” author Cecily von Ziegesar, a performance by Airborne Toxic Event and, oh yeah, a few very juicy cliffhangers. Blake Lively, Leighton Meester, Penn Badgley, Chace Crawford, Ed Westwick, Jessica Szohr, Kelly Rutherford and Matthew Settle star.

:: SPOILER SOURCES ::

Blair Waldorf needs a devil redeemed, not a donut. Is there any good Chuck/Blair stuff coming up on Gossip Girl? — Janey
And your reward is such: Of course there are great Chair moments coming up! Producers have certainly heard your cries, and all I’ll say is that you should not count anyone out of the running for Blair’s heart. On that note, can everyone please give Josh Schwartz his Twitter back? Also, CONGRATULATIONS. You are the winner of this week's Best Question award for one of the best characterizations of Dan Humphrey I've ever read.

Can you tell us anything about Blair on Gossip Girl and the many men in her life? She’s got her pauper, her prince and her king — how will she ever choose?! I’m really rooting for Chuck and Blair to get back together eventually. Can you tell us if the last five episodes have some drama for them? — Leslie
I don’t know how she’ll choose, but I do know that easier choices have been made by entire branches of the U.S. government. Kidding. But in all seriousness, there is definitely drama to be had, and I hear there’s more than you can handle in the two-part finale, which takes place over one event-filled night in the Gossip-verse (but airs over two weeks for us).