2x21 "Seder Anything" Sneak Peak!!
Serena (Blake Lively) returns from her trip to Spain with Poppy (guest star Tamara Feldman) and Gabriel (guest star Armie Hammer). Blair (Leighton Meester) makes a secret deal with Nates (Chace Crawford) grandfather, William (guest star James Naughton), and Nate learns some disturbing information about his fathers arrest. Dan (Penn Badgley) takes a job as a cater-waiter to earn money for college, but is distressed when he discovers the gig is a Passover seder at the Waldorf penthouse and several of his friends and family are guests. Taylor Momsen, Ed Westwick, Kelly Rutherford and Matthew Settle also star. John Stephens directed the episode written by Amanda Lasher.

ANOTHER SOURCE:
Blair and Chuck team together to expose Serena's new beau, Gabriel.

Nate sees a bond between them and tries to compete with Chuck by asking Blair to move in with him, which causes rivalry between the two and starts a game of "Who Will Win The Waldorf" with unexpected results.

A newly reformed Georgina Sparks (Michelle Tratchenburg) and the always entertaining Cyrus Rose (Wallace Shawn) return.

Episode Title: "Seder Anything"
Airing: April 20, 2009