Exclusive

Grey's Anatomy Exclusive: Derek and Addison Reunite, But There's a Doozy of a Twist!

Grey’s Anatomy is pulling a Fringe.

In a February 2012 sweeps episode, the docs at Seattle Grace will be making their rounds in an alternate reality, as the ABC drama ponders the provocative question, “What if things had been different — very different.”

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Specifically, Meredith imagines what life would’ve been like had her late mother Ellis never had Alzheimer’s, a traumatic situation that shaped Mer into the dark-and-twisty wife and MD she is today.

A Grey’s rep declined to comment, but TVLine has confirmed that Kate Walsh will play a big role in the mind-trippy episode. Why? Because in this alt-reality, Derek and Addison — wait for it — never broke up!

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And while Walsh is the only former series regular returning, an insider confirms that other Grey’s alums will be back — including a certain victim of the Seattle Grace Massacre of 2010, who shall not be named. (Follow me on Twitter for clues.)

And to be sure, Derek, Mer and Addison aren’t the only characters who get pulled into this new dimension. “Everyone is affected,” says the insider.

Grey’s Anatomy resumes Season 8 on Jan. 5.

Thoughts? Predictions? Excited to see Grey’s taking such creative risks in its eighth season? Hit the comments!