Grey's Anatomy Season 7 Episode 3
Superfreak
Issues surface when Derek's estranged sister, Amelia, visits unexpectedly; Meredith and Derek continue to try to ease Cristina back into surgery.
Guest Stars
Caterina Scorsone
Amelia Shepherd
James Tupper
Andrew Perkins
Arlene Santana
Nurse
Dana Davis
Gretchen
Art Chudabala
Jerry Adams