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.
We're trained to be vigilant, to chase down the problem, to ask all the right questions, to find the root cause until we know exactly what it is and we confront it. It takes an extreme amount of caution or we can't overstep ourselves. We can create problems that don't exist.