2x21 Superstition
After four deaths in the morning, every doctors' personal superstitions and rituals come into focus. And the belief is that three more patients will die before the day is done. George continues to ignore Meredith -- but Callie seems to have lost patience with him as well, since he hasn't called her yet. Meredith and Bailey deal with a woman who claims to have been struck by lightning -- but clearly wasn't. Cristina has to deal with a patient with OCD who suffered a head trauma.