It's an Upper East Side face-off when Blair and Chuck both set their sights on a particular item up for bid at Sotheby's and the personal stakes are high. Serena suspects that Carter may be up to his old habits, Georgina takes an interest in Dan, and Vanessa begins to suspect that something isn't quite right with Scott . Chace Crawford, Taylor Momsen and Matthew Settle also star. Jean DeSegonzac directed the episode written by Robert Hull.