We've been reading casting notes, details and spoilers for days already. Now here's the latest on the upcoming flashback episode from Michael Ausiello of Entertainment Weekly ...

Q: Could we have some Grey’s Anatomy scoop, please?

A: The show’s big flashback episode - slated to air in February/March - will reveal the toll Ellis’ career (as well as her affair with Richard) took on a 4-year-old Meredith.

On a different note, there’s also buzz that the episode will show us Dr. Bailey’s days as a Seattle Grace intern and introduce us to the Nazi supervisor who schooled her.

Now that's a new, interesting wrinkle ...

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