Watch Gossip Girl Season 4 Episode 1 - Double Identity Online: Still in Paris, Blair and Serena are suprised to run into Chuck Bass as a person they've never seen him before; a nice guy adjusting to a brush with death by making fresh start in Paris with a mysterious new woman, Eva, at his side. Back in New York, the crafty Juliet offers to help Nate win Serena back, suggesting that reigniting Dan and Vanessa's romance may just be the trick to remove Dan from the Dan-Serena-Nate love triangle.