So, as promised at the end of last week's Private Practice, Addison and Naomi arrive at Seattle Grace with Addy's brother Archer and the worms residing in his brain. No, seriously. It's 100% as disgusting as it sounds, especially since they felt compelled to show us the little buggers. Sam winds up joining the gang, so that it can really be a true crossover episode, and he manages to convince Derek to do the surgery and be a god like Addy begged him to be. And because he's Derek, he manages to get all eight of the worms, and there is much rejoicing in the land. He puts off Jen's aneurysm surgery so that he can work on Archer, but when he tells Jen it's going to be another day she manages to convince him to just operate on her that night so that she doesn't have to spend another night worrying that she might suddenly die. He operates, all seems fine, and then she wakes up gasping for breath and Alex screams at someone to page Shepherd. This means she's either going to make an appearance on PP or we have to wait a week to see what happens to her and her unborn baby.

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