Derek asks Meredith to work with him again in Neuro. He has to leave the surgery and Meredith and Lexie remove a tumor that causes the patient to lose the ability to speak.
Jackson’s mother visits, bringing along another doctor who she wants to find out things about Jackson. Jackson hooks up with the doc and Catherine flirts with Richard.
Morgan grows closer to Alex, causing everyone to question their situation.
Cristina grows more suspect of Owen and accuses Emily of sleeping with her husband. Emily tells her that she flirts with him but that is all. Cristina confronts Owen about their relationship and he admits to cheating on her.
Our intentions are always pure. We always want to do what is right, but we also have the drive to push boundaries. So we're in danger of taking things to far. We're told to do no harm while we're trained to cut you open with a knife. So when we do things when we should have left well enough alone. Because its hard to admit when there's no problem to treat, to let it alone before we make it so much worse. Because we cause terrible damage.