Piece of My Heart
Show: Grey's Anatomy --> Season: 4 - Season 4
AirDate: 5/1/2008
Runtime: 43
Voting: 7.4 (9)

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.
Kate Walsh
Addison Montgomery
Brooke Smith
Erica Hahn
Clea DuVall
Jennifer Robinson
Elizabeth Reaser
"Ava" Rebecca Pope
Gloria Garayua
Intern Graciella
Amy Madigan
Katharine Wyatt
Lauren Stamile
Nurse Rose
Richard Keith
Intern Mitch
Jason O'Mara
Phillip Robinson
John O'Brien
Lab Tech Jeffrey
Molly Kidder
Intern Megan
Winston Story
Intern Leo
Tymberlee Hill
Intern Claire
Joy Osmanski
Intern Lucy
Kathleen Rose Perkins
Sarah
Ken Barnett
Freddie
Sam Daly
Will
Meg Cionni
Nikki