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Over dinner, Aaron tells Serena he's ready to go steady... but by the way, he doesn't drink because he's sober now, and he hopes that's okay with her. Having apparently learned nothing from her year dating Dan, Serena reassures him that she's a perfect angel and is never tempted by the drink. Yeah, this'll end well...

Bart mentions to Eric that he's spotted Eric's boyfriend getting awfully close with the swim captain. But how does he know this juicy scoop? After a little investigating with Chuck's help, Eric discovers that Bart's been keeping fat files on the entire van der Woodsen family!

Meanwhile, Dorota lets slip that Eleanor and Cyrus are getting engaged, and Blair is not happy. Bad enough that the uncouth midget eats her pie, but now he's stealing her mother for good! Feeling unappreciated, Blair decides to run away, with Dorota in tow.

Dan and Rufus are grocery shopping when they run into Aaron. Depending on how you read the scene, you either think Dan was a stand-up guy or a little TOO honest, but regardless, Aaron isn't happy when Dan alludes to Serena's colorful past. He goes straight to Serena, who's wearing a truly hideous ketchup-and-mustard colored satin getup, and confronts her about it. Serena claims that Dan wasn't really telling the truth.

Vanessa runs into an FBI agent who's looking for Nate -- well, really, for his dad, who, as usual, is up to no good. She calls Chuck (reluctantly) and begs for his help. Together, they sit down with Nate and tell him what's up. Apparently Mr. Archibald is pressuring his in-laws for a huge sum of money so he can run off and start over.

Lily calls Rufus and tells him he'd better come over right now. He and Dan arrive at the van der Woodsens, and Lily tells Rufus about the emancipation papers. Rufus tells Jenny that he'll love her no matter what, and if sending her away is what it'll take to get her to come back, he'll do it. Left with no real argument for emancipation, Jenny still refuses to give in and stalks off.

Meanwhile, Aaron confronts Dan and accuses him of being a liar. At first, Dan wants to defend his honor, but when he sees what Serena's trying to do, he goes along with it. Aaron leaves them alone for a minute, and Dan tries to get Serena to see that she should just be honest.

Nate confronts his father, who lamely tries to deny his sneaky plot. Finally, he sputters that it was supposed to help all of them. Nate tells him that he can either try to run away and lose his son's respect forever, or turn himself in to the FBI officers who are on the way. His call. Mr. Archibald does the right thing for once and turns himself in. He's taken away while Nate and his mom sob in each other's arms.

Eric alerts Lily to the files he's found, and she's livid. She tells Bart that they're leaving -- how could he keep tabs on the children like this? She herds up Eric and Serena for a diner Thanksgiving.

At the diner, Eric reveals that he read Lily's file and saw that she was institutionalized, just like him, at age nineteen. He wishes she'd told him, but she tells him it's hard to talk about. They push fries idly around on their plates until Lily has a brainstorm -- they can go to the Humphreys'.

Blair and Dorota are stomping their way through the Upper East Side when they run into a shivering Jenny. She truly has nowhere to go. Blair and Jenny exchange sob stories about their families, when suddenly Eleanor shows up and demands for Blair to come home so she can share a big surprise. Blair's still mad about the engagement, but all is (just about) forgiven when she discovers the real surprise: her dad has flown in from France to see her and to give his approval of Cyrus for Eleanor! Now that he approves, the engagement is made official, and even Blair seems kind of happy about it.

After the FBI fiasco, Nate shares a private moment with Vanessa. They reveal that the feelings from before are still kind of there, and they agree to hang out soon. Then Vanessa takes off, looking thrilled, and Nate and Chuck are reunited at last! Rather than hug, Chuck suggests they go drink in the limo. It's a classic BFF moment for these two. They've spent way too much time apart!

Dan and Rufus return home to find Jenny sans eye makeup and looking five years younger. The Humphrey family is back together again! Just then, Lily and Eric show up, along with Vanessa, who makes up with Jenny, no doubt feeling charitable since she thinks she has Nate's heart in her back pocket. The group gets cooking, and all seems to be well...

...until Vanessa discovers the letter Nate sent to Jenny. Jenny never received it, of course, since she hasn't been living at home this whole time. Vanessa manages to sneak away with the letter, and she reads it! She's not happy when she sees that it's all about how Nate still wants to be with Jenny. Undeterred, she slips the letter into her purse. Again... that's not going to end well.

What did you think of the episode? Which parental figure is the most appalling? Which girl should Nate go for? Why is Serena's wardrobe getting progressively worse? And how adorable was it when Blair finally got all she really wanted for Thanksgiving? Tell us all in the comments!