Cristina won't let herself get excited when she is nominated for an award.
The doctors are exposed to flu-infected patients; Derek prepares to give a speech; a new doctor gives Alex a glimpse into an alternative medical practice.
Cristina thinks about her future; a patient decides whether to live or not.
Bailey asks Richard to join her on the case of a lifetime; Meredith decides to hire a research assistant; Callie shocks Derek; a young pregnant woman (Keke Palmer) needs Shane's help.
Arizona's bad day escalates when she advises a patient on a potential double amputation; Derek breaks a promise; Stephanie and Jo find an abandoned baby; the nonfraternization rule leads to a suspension.
Couples panic when the hospital announces a nonfraternization policy; Owen and Emma discuss the future; Meredith and Cristina have some girl time; Richard asks the residents for help with a rare cancer case.
The doctors are faced with the consequences of the events at April's wedding; Alex reacts to the news about his father; Callie and Arizona make a decision about their relationship.
Meredith and Cristina bicker about their careers; Bailey talks to Ben about him moving back to Seattle; Shane puts himself in a risky situation; Derek receives a life-changing phone call.
April's visiting sisters get on her nerves; when Matthew and Jackson witness an accident, they must work together; Callie and Arizona work on their relationship.
Ben worries that an innocent conversation with Derek could end up causing problems for Bailey; Cristina turns to Shane as tension with Meredith increases; April's upcoming wedding creates an uncomfortable situation for Stephanie and Jackson.
As Callie is faced with a malpractice suit, her supportive father (Hector Elizondo) visits and shares a secret; past details about Callie and Arizona's marriage are revealed.
A betrayal intensifies the issues between Cristina and Meredith; Matthew and April make a decision about their relationship; Bailey faces difficulties with Ben's return.
Costumed patients create a challenge for the doctors; Derek and Ben work on a new surgical technique; Richard asks a resident to perform his next surgery, angering Bailey.
Callie and Derek collaborate on a brain mapping project; Meredith thinks about continuing her mom's research; Shane's guilt persists.
Meredith struggles to balance her roles as a surgeon and a mother when she returns to work; Stephanie tries to impress Jackson's mother; Jo becomes overly involved with a patient.
The doctors put together a fundraising gala; Bailey must face several difficult patients; Shane and Stephanie take care of the busy ER on their own; Alex opens up to Jo.
Actress Sandra Oh (Dr. Cristina Yang) talks about her audition and lends insight into her character.
Bailey thinks no matter the risk, they need to operate on Richard. Letting the condition get worse is worse than not operating on him at all.
Alex confronts his father.
Remember The Time: Sneak Peek
Arizona never forgave Callie for amputating her leg.
Addison is cheating on Derek with Mark.
Stephanie explains Ross kissed her first and not the other way around. Jackson tells her he never thought she wanted to go to the gala. Either way, they need to be more truthful with each other.
Love The One You're With: Sneak Peek
Run, Baby, Run - Sneak Peek
Beautiful Doom - Sneak Peek
Jesse Williams, who plays Dr. Jackson Avery, discusses his character's complex storyline.
Shane has had enough of Meredith's attitude and unleashes all the things Cristina has wanted to say since their falling out. Obviously, this earns him a kiss from his idol.
What does April do when she runs out of clean underwear? The newlyweds then realize they have differing opinions when it comes to frivolously spending money.
Shane's ambition is something Cristina can admire. Shane saw what he wanted and did what was necessary to get it.
Actress Chandra Wilson (Dr. Miranda Bailey) reveals what she admires about her character and how Dr. Bailey is an inspiration for others.
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