Thatcher Grey returns to Seattle Grace with a failing liver on Grey’s Anatomy: Season 6 Episode 4 entitled, Tainted Obligation, and now it’s up to Meredith to save him.
Cristina’s competitiveness is getting to him and he decides to get even by tricking her into assisting in an unusual surgery.
A patient whose body is riddled with tumors gets the empathy treatment from Izzie
Jeff Perry guest stars as Thatcher Grey.