Awesome scene alert! It's a clash of the titans as Miranda takes on Derek in the middle of his surgery in next week's all-new Grey's Anatomy, "Stairway to Heaven."

What's great about this show is that there are so many characters (with some great actors driving them), we don't always get to see how they will react when pitted against one another, and the results can be both unpredictable and intense. Like this particular scene.

As he operates, Miranda bursts in and asks Derek to stop trying to save William Dunn (the death row inmate), who's been trying to kill himself as we saw at the conclusion of "Sympathy For the Devil" so he can die naturally and his young, fellow patient can have his liver.

If he's executed by the state, as is scheduled for five days from now, they can't harvest his organs right now. Derek defiantly holds his ground. Who will win this standoff Thursday?

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Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.