Grey's Anatomy

Meredith and Derek learn that "happily ever after" isn't easy; a military doctor who brings in a trauma patient catches Cristina's eye.

Meredith and Derek learn that "happily ever after" isn't easy; a military doctor who brings in a trauma patient catches Cristina's eye.

A plumbing leak becomes a deluge and wreaks havoc at Seattle Grace, as the Chief attempts to implement new policies and George tries to retake his residency exam.

Meredith freaks out when Derek discovers her mother's old diary in the house and Cristina stumbles into a part of the hospital that she's never seen before.

Bailey heads up a team of surgeons performing a "domino procedure" in which each surgery hinges on the one preceding it.

To help Bailey become the best general surgeon at Seattle Grace, the Chief gives her new power, new responsibility, and the challenge of removing a girl's inoperable tumor.

The Chief announces to the residents that a solo surgery will be awarded, and the news sends them into a competitive frenzy.

One of Meredith's oldest friends, Sadie, becomes an intern at Seattle Grace, but Mer's friends are less-than-welcoming to her.

Meredith, Cristina and Bailey come to Lexie and Sadie's rescue when a surgery goes horribly wrong, as Owen and Derek treat a man seriously injured while sleepwalking.

Cristina is awarded the first solo surgery among the residents, but must give it up and choose her replacement and Callie can't figure out if Sadie is friendly or flirtatious.

Bailey teams with Seattle Grace's new pediatric surgeon, Dr. Arizona Robbins, to save the life of a young patient.

Derek's mother, Carolyn, makes a surprise visit to Seattle and meets Meredith for the first time, as Mark tries to conceal his relationship with Lexie from her.

Bailey grows desperate as a patient's condition becomes more and more dire.

Now that Derek has the engagement ring, he searches for the perfect way to propose to Meredith, as Lexie demands that Mark go public with their relationship.

Addison, Naomi and Sam rush the ailing Archer to Seattle Grace and reunite with old friends Derek and Mark to help save his life.

Derek's confidence is shaken like never before as he faces off with Addison over what course is best for their dying pregnant patient.

After learning at a deposition that more of his patients have died than survived, Derek decides to quit, even as Meredith refuses to give up on him.

After his fellow surgeons try and fail to bring Derek back to work, Meredith must summon the strength to convince him.

Tensions are running high at Seattle Grace with all eyes on Derek as he is set to perform his first surgery after his breakdown.

As she endures aggressive treatment for her cancer, Izzie throws herself into planning Derek and Meredith's wedding.

As preparations continue for Meredith and Derek's wedding, Izzie receives a surprise hospital visit from her handful-of-a-mother, Robbie.

As Meredith, Derek and all of their friends prepare for the big wedding, a group of college students, injured in a car crash, is admitted to the ER.

Izzie spends time with a fellow cancer patient and contemplates whether or not to undergo a risky surgery, as Mark wants to take his relationship with Lexie to the next level.

Izzie spends time with a fellow cancer patient and contemplates whether or not to undergo a risky surgery, as Mark wants to take his relationship with Lexie to the next level.