
Season 4, episode 13
Piece of My Heart
- 43 min
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.

Season 4, episode 13
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.