Engagement ring in hand, Derek searches for the right way to propose to Meredith. Meanwhile, Lexie demands that Mark... Full summary

As her young patient's condition worsens, Bailey seeks desperately for an organ donor. One possibility: death-row... Full summary

Derek's mother, Carolyn (Tyne Daly), meets Meredith for the first time during a surprise visit to Seattle, and Mark... Full summary

While Bailey teams with new pediatric surgeon Arizona Robbins (Jessica Capshaw ) to save a young patient near and dear... Full summary

Cristina is awarded the first solo surgery among the residents, but she has to relinquish it and choose her... Full summary

A routine surgery goes horribly awry for Lexie and Sadie, so Meredith, Cristina and Bailey rush to assist them.... Full summary

Meredith's old friend Sadie (Melissa George) becomes an intern at Seattle Grace, but Meredith's other friends aren't... Full summary

The Chief tells the residents that one of them will get a solo surgery, and a competitive frenzy ensues; Derek asks... Full summary

The chief gives Bailey new power and responsibility. He also gives her a very difficult surgical assignment: emove a... Full summary

Bailey heads up a "domino procedure," in which each surgery hinges on the one preceding it. Meanwhile, Derek gets sole... Full summary