Greys Dead?

It's the filler middle in our three-episode sandwich. Izzie drills a hole in her patient's skull to relieve the pressure on his brain, thereby becoming a neurological rock star. George wanders around looking for his patient's son (because he told her that her son was found and doing well). He eventually finds the son on Callie's operating table. Alex realizes that the best way to help worried family members identify their loved ones is to take pictures of all the patients and corpses from the ferryboat accident and post them on the bulletin board. And Cristina wanders around, doing nothing much except asking where Meredith is. The answer to that question is "bobbing around in the water." That is, until Derek notices Meredith's jacket draped across a patient and asks creepy silent Mini-Meredith where she is. He dives in and saves Meredith, but she's hypothermic, not breathing, and very possibly dead. Yikes.