Michael James Thompson

After a successful operation on his heart, George's father undergoes surgery for his cancer, Thatcher Grey visits Seattle Grace in order to see his new granddaughter, and Meredith discovers that Derek has trouble sleeping soundly. This is Part One of a two-part episode.

Addison butts heads with a new oncologist (Cristian de la Fuente) while treating a newborn with a malignant tumor; Pete is uncomfortable when Violet tries to help a parolee.