Walter Addison

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

Secrets from Ellis Grey's past come to light when Meredith watches old videos and reads through her mother's journals.

The hole Winona has dug for herself gets deeper, and Boyd is offered a chance to work for the other side.

The guys head back to Sacred Heart to help teach the new batch of medical school students. Drew, Lucy, Maya and Cole are some of the new recruits, and they have an action-packed first day.

Lewis is called up before the review board, when a disgruntled attending doctor holds her responsible for a patient's death.

Vivid nightmares insert Allison into scenes from Night of the Living Dead, leaving her with unexplained cuts and bite marks.