In this week's Gossip Girl, the gang bands together to help Chuck avenge his father's fake death. Meanwhile, Dan struggles to trust Blair, worried that she's still in love with Chuck. Nate and Lola team up to take down Diana, Serena poses as Blair, and we're left to wonder whether they'll be BFFs for long. From headbands to handcuffs, let's recap this week's top OMG moments.
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