Grey's Anatomy
Tainted Obligation (6x4)
Air date: Oct 08, 2009
When Meredith and Lexie's father, Thatcher, returns to the hospital with a failed liver, it's up to Meredith to save his life. Meanwhile, Izzie empathizes with a patient riddled with tumors, as Mark, annoyed with Cristina's competitive zeal, tricks her into assisting on an unusual surgery.
- Premiered: Mar 2005
- Episodes: 444
- Followers: 26,5k
- Running
- ABC (US)
- Thursday at 21