Walter Addison

J.D., Turk, Denise and Drs. Kelso and Cox teach med school at Sacred Heart; med students Drew, Lucy, Maya and Cole attend their first day of school.

Secrets from Ellis Grey's past come to light when Meredith watches old videos and reads through her mother's journals. Meanwhile, Maggie rocks the hospital with an unexpected announcement; Alex gets new responsibilities and Callie focuses her attention on the Veterans' project.

When the young daughter of a prominent family is assaulted at a carnival, the Sons of Anarchy take the law into their own hands.

The reality of having a baby settles in for Elliot and J.D.; Lucy struggles with the reality of operating on people.

Lewis goes before the review board when a hostile attending doctor holds her responsible for a patient's death.

Will's childhood nemesis joins the firm and resumes his old reign of terror. Meanwhile, Nathan's birthday sparks rivalry between Grace and Karen.