The doctors at Seattle Grace Hospital return for a fourth season of the popular medical sudser. As they gain more experience, Meredith (Ellen Pompeo), Cristina (Sandra Oh), Izzie (Katherine Heigl), George (T.R. Knight) and Alex (Justin Chambers) continue to deal with life-and-death issues at work. All the while, they navigate their complicated personal dramas and relationships. Patrick Dempsey co-stars as Dr. Derek ``McDreamy`` Shepherd.
