An intra-operative crisis casts a shadow over Derek's first day as interim chief, Owen's influence worries Cristina, Karev's first pediatric surgery case turns out to be more than babysitting and Webber resents the decision he must make.
Stars: Ellen Pompeo, Sandra Oh, Katherine Heigl
Director(s): Jeannot Szwarc
Writer(s): Shonda Rhimes, Stacy McKee