Credit: Peter Kramer/Getty Images Photo: A.J. Langer Plays Erica

As we've previously reported, the Grey's Anatomy/Private Practice cross-over, which starts with Grey's Season 8, Episode 15: "Have You Seen Me Lately," will focus on Amelia (Caterina Scorsone) asking Derek (Patrick Dempsey) for help with a patient, Erica (A.J. Langer).

Private Practice fans are already familiar with Erica, but Grey's fans are probably scratching their heads over who she is. Well, we're here to fill you in — and give you some hints about her fate, thanks to E!.

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If you're at all familiar with Private Practice, you probably know that Charlotte King (KaDee Strickland) and Cooper Freedman (Paul Adelstein) are two long term cast members in an adorable relationship.  

If you're not up to date, however, you might have missed that Coop recently discovered that he has a son named Mason by Erica, a fling from his past. And you probably also missed that Erica is dying of a rare type of cancer.

So, that's the back story. In this episode, as we've already spoiled, Amelia (Caterina Scorsone) takes Erica's case up with Derek. To add to the fun, Cooper and Charlotte will also make the trip to Seattle Grace-Mercy West, to give Mason moral support.

As you can guess, this episode is guaranteed to pull at your heartstrings. But will Erica survive?

Paul Adelstein told E! that the actors "do know" Erica's fate, but he's not spilling. Boo. We'll just have to wait until the episodes air. KaDee Strickland did dish that the surgery is  "a big deal," so there's definitely no guarantee that this story will have a happy ending.

Remember to tune in to the episode on Thursday, February 16, at 9 pm ET/PT on ABC.

Source: E!

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