(S05E12) "You're wearing an alarmingly high pony tail." - Derek

At the most simplified level, Dunn is right, you know - a doctor isn't really that different than a serial killer. They both get to choose who dies. A doctor is likely driven by science while a serial killer gets his marching orders from a little voice in his head, but they're both making choices; doing what they think is the right move. Eric Stoltz has thus far been a shining point this season. William Dunn is one of the better characters we've seen on Grey's Anatomy in a while and I'm glad he'll be around for at least one more week.