Watch Grey's Anatomy – Season 4 Episode 13: Piece of My Heart
Cast: Kevin McKidd , Kim Raver , Jason George , Ellen Pompeo , Chandra Wilson , James Pickens Jr. , Caterina Scorsone , Camilla Luddington , Chris Carmack , Anthony Hill
Directors: Shonda Rhimes
Watch Grey's Anatomy – S4E13
Episode Overview
Addison visits Seattle Grace because they need skills that only she has. Rebecca/Ava returns with news for Alex. Meredith and Derek's clinical trial experiences one or two developments.
