High society and low blows are back as Gossip Girl continues for its much-anticipated fourth season. Last season ended with a bang as a heartbroken Chuck Bass lay bleeding in the streets of Prague while Blair Waldorf and a newly single Serena van der Woodsen jetted off to Paris for a fabulous summer abroad. Meanwhile, Nate Archibald, fresh off his painful breakup with Serena, decided to take a page out of Chuck's playboy playbook just as Dan Humphrey discovered he was going to have to settle down and be a father . . . to Georgina Sparks' (recurring guest star Michelle Trachtenberg) baby! Season four opens with a radiant Serena and Blair enjoying their grand and romantic summer in Paris . . . until Chuck mysteriously arrives in town with a new girlfriend and a new identity. Blair swore off Chuck forever but will this changed man woo Blair into having a change of heart, or will Queen B set her sights on ruling Columbia University? And as for that baby . . .