505 The Fasting and the Furious

In the midst of celebrating Yom Kippur with family and friends, Blair and Louis find themselves in a power struggle with Louis' family. Serena's boss puts Serena in the awkward position of choosing between her new job and her relationship with Dan. Diana prepares to debut the New York Spectator, but an unfortunate last-minute surprise delays the launch and Diana expects Nate to do whatever it takes to save the day.

Asher Roth - Another One Down Feat. D.A. Wallach

Cults - Bumper
Rainbow Arabia - Nothin' Gonna Be Undone

SBTRKT - Trails of the Past

XOXO

504 Memoirs of an Invisible Dan

After much deliberation, Dan decides to gather Serena, Blair, Nate, Chuck, Rufus and Lily to reveal the truth about his book in the hope that they will support him at his book party. Meanwhile, Blair and Louis hit a crises point after Louis reads Dan's book. Diana learns incriminating information about one of Nate's friends and uses it to her advantage.

The Duke Spirit - Don't Wait

Chase & Status - Embrace Feat. White Lies

My Gold Mask - Ghost In Your Bed

Ida Maria - Quite Nice People

Carlin Music - Jacksons Morning Brush

XOXO

503 Jewel of Denial

Nate must decide whether to cross moral lines at Diana's request. Dan has figured out who is publishing his book, and seeks help to stop it, but he ends up in the spotlight anyway. Chuck helps Dan come to terms with his fate, just as Dan continues to try to help Chuck break through his emotional block. Serena and Charlie return to the Upper East Side from California.

Madison - #1 (RAC Remix)
Fans Of Jimmy Century - Your Crying Game
Martin Solveig - Hello Feat. Dragonette
My Morning Jacket - Movin' Away
The Hundred In The Hands - Pigeons
Maya Von Doll - Play My Way


XOXO

502 Beauty and The Feast

Nate reconnects unexpectedly with Diana, who offers him an exciting opportunity. Serena forces Charlie to decide which world she wants to embrace. Dan seeks out Chuck's help to stop the publication of his book, but discovers it is Chuck who needs the help. Blair's future sister-in-law, Beatrice, arrives from Monaco, but her motives with Blair may be more than just to get acquainted.

The Woodenelves - A Little Bit Of Me

Peanut Butter Lovesicle - Black Eyed Blues

The World Record - We're #1

CocknBullKid - Cocknbullkid

Hotpipes - I Am Better Than You

All Wrong And The Plans Change - Looking Down

Foster The People - Pumped Up Kicks

Telegraph Canyon - Safe On The Outside

Rainbow Arabia - Without You

XOXO

501 Yes, Then Zero

Serena loves her new job in Hollywood, but makes a costly misstep when she tries to impress her boss. Chuck and Nate arrive in Los Angeles as the last stop of their Lost Summer trip, joining Serena at a glamorous Hollywood Hills party, where Nate meets a sexy older woman. Blair and Louis return from Monaco and begin planning their royal wedding, but when Louis refuses to stand up to his family and support Blair's choices, his weakness threatens their relationship. A magazine is planning to run an excerpt of Dan's book until an unlikely ally steps in to help him kill the story.

Ida Maria - Bad Karma

The Exiles - Circles

Surf City - Headin' Inside

Foster The People - Houdini

Make The Girl Dance - Kill Me

Snowden - Lemon Peel

Jenny & Johnny - My Pet Snakes

Becca Styles Ft. Classic - Saved

Little Dragon - Shuffle A Dream

The Uglysuit - The Freeworld

Viva Voce - The Future Will Destroy you

Paul Reeves - Charleston

XOXO

422 The Wrong Goodbye

Season four wraps up with an explosive finale, including the return of Georgina Sparks and Constance Billard mean girls Kati and Is, a cameo by "Gossip Girl" author Cecily von Ziegesar, a performance by Airborne Toxic Event and, oh yeah, a few very juicy cliffhangers.

The Airborne Toxic Event - All For A Woman

The Airborne Toxic Event - Changing

The Duke Spirit - Cherry Tree

Badly Drawn Boy - In Safe Hands

Oh Land - Perfection

Adele - Rolling In The Deep

The Pierces - Space + Time

Figurines - The Great Unknown

XOXO

421 Shattered Bass

Charlie is finally starting to feel less like a fish-out-of-water with Serena 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 finds herself torn between the men in her life. Jack Bass' return to the Upper East Side sets off a chain of events that could end up destroying Chuck and those closest to him.

The Kills - Heart Is A Beating Drum

Squeak E. Clean - Mon Amour

Tapes 'n Tapes - One in the World

Cold War Kids - Sensitive Kid

Peanut Butter Lovesicle - State of I

Lykke Li - Youth Knows No Pain

Daniel May / MasterSource - Drinks On The House

XOXO