After a photo gallery and two promos, here's a two-minute sneak preview of "An Honest Mistake." And it's a rather intense one, to put it mildly, picking up where last week left off.

In the midst of a major operation, Derek finds his confidence is shaken like never before as he faces off with Addison over what course is best for their dying, pregnant patient ...

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