Michelle Trachtenberg Is Back for Gossip Girl Finale—and Stealing Serena's Bro?

The CW confirms Georgina will be back, and the actress tells us she'll have a big scandal involving a certain unlucky guy

Something wicked this way comes, and her name is—you guessed it—Georgina Sparks!

Insiders and the show's CW rep confirm that Michelle Trachtenberg will be coming back to Gossip Girl for the very last episode of the current season, which is starting to sound crazy good.

"I'm sure there'll be a big scandal," Michelle tells me. "She's back for vengeance."

So what's she doing up there in that photo with Serena's little bro, Eric? Well...

Turns out Michelle has actually stolen Eric (Connor Paolo) over to her own show. NBC confirms Connor is visiting Michelle's show Mercy this very week for a guest spot, so it's a trade-off of sorts.

According to NBC, Connor is playing a kid who sets off a pipe bomb on a commuter bus. He's brought in as a patient, and the father of another boy on the bus goes after him with a gun. The episode is set to air March 3.

Still, on Gossip Girl, you can bet that Georgina will dig her claws into at least one of the Upper East Side guys when she returns for the season ender. "I'm sure Georgina will be seeking vengeance," Michelle told me this morning of her return. "They haven't written it yet, but she was tricked and sent away, after all. And that li'l lady certainly doesn't like to be tricked."

Michelle says we probably can expect more catfighting with Blair, too: "It's so funny because Leighton [Meester] and I are so close," Michelle told me at last month's NBC TCA party. "And we always have to say, 'I hate you!' but it's like, 'I don't really hate you, I love you!' At her performances, [Leighton] has me at the front row and, like, we sing to each other while she's singing up there. So, we're the cheeseball friends."