As we saw on last week's episode, Cristina seems pretty serious about the whole quitting thing. There was no groveling for her job back, or even much regret about walking out.

So what's she up to now? The answer may not shock those who read Grey's Anatomy spoilers, but to the doctors planning to celebrate Derek's grant, it comes as a surprise.

Check out this sneak preview for "Slow Night, So Long" ...

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