In "Despicable B," Blair (Leighton Meester) feels like her Upper East Side status might be slipping away and devises a plan to assure that doesn't happen.
Meanwhile, Lily (Kelly Rutherford) throws a family gathering - including William (guest star Baldwin), Carol (guest star Sheila Kelly) and Lola (guest star Ella Rae Peck) - in an attempt to prove the van der Woodsen family is as united as ever.
Finally, Nate (Chace Crawford) digs into Diana's (guest star Hurley) past and is surprised by what he discovers.
Watch a preview below:
Blake Lively, Penn Badgley, Ed Westwick, Kaylee DeFer and Matthew Settle also star. New York Social Diary's David Patrick Columbia appears in the episode as himself. David Warren directed the episode written by Austin Winsberg.
HART OF DIXIE follows at 9 p.m. ET/PT.
In "Destiny & Denial," after a wild night of partying, Wade (Wilson Bethel) wakes up with a massive hangover, an uninvited houseguest and no memory of what happened the night before.
Meanwhile, George (Scott Porter) takes an unplanned roadtrip to New Orleans, and Lemon (Jaime King) finally confesses her troubles to her father, Brick (Tim Matheson).
In the episode, Scotty McCreery performs "The Trouble With Girls" during a pivotal scene between Zoe (Rachel Bilson) and George, and Scott Porter performs "Jambalaya."
Cress Williams also stars. David Paymer directed the episode written by executive producer Leila Gerstein.
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