Grey's Anatomy

The doctors of Seattle Grace help Izzie cope with the loss Denny, and her decision to quit the internship program.

Cristina meets Burke's parents in the most awkward of circumstances and the interns campaign for Izzie's reinstatement.

Cristina tries to help Preston cope with his hand tremor, Izzie attempts to return to the hospital for the first time since she quit the program.

Addison doubts her abilities as a doctor, Cristina pushes Burke's rehabilitation and one of the interns suffers their own medical emergency.

Bailey treats a young mother battling breast cancer, Derek learns more about Mark and Addison's relationship and the interns defend a resident's competence.

Cristina scrubs in on the rare "humpty dumpty" procedure, much to the envy of her fellow doctors, Alex questions his future medical specialty, George and Addison work with a pregnant woman with an unusual dilemma, and Derek receives a surprise visit from his sister.

The men of Seattle Grace go on a camping trip together, Addison and Callie must team up to work on a patient, Meredith assists Sloan with a procedure unlike any she has experienced, and, suspicious of her recent actions at the hospital, Bailey confronts Cristina.

The O'Malley Family visits George at the hospital, Meredith is determined to have a more positive outlook on life, Derek and Addison strive for a civil relationship, and Richard endeavors to reunite with his wife, Adele.

A traumatic car accident fills the ER, Cristina has a crisis of conscience about her teamwork with Burke, and Izzie pushes the boundaries.

Recent events strain Burke and Cristina's relationship, Meredith's half-sister, Molly, is admitted to the hospital, and Mark and Derek must work together when two close-knit brothers seek medical help.

After a successful operation on his heart, George's father undergoes surgery for his cancer, Thatcher Grey visits Seattle Grace in order to see his new granddaughter, and Meredith discovers that Derek has trouble sleeping soundly.

After a successful operation on his heart, George's father undergoes surgery for his cancer, Thatcher Grey visits Seattle Grace in order to see his new granddaughter, and Meredith discovers that Derek has trouble sleeping soundly.

While rumors of the Chief's departure spread among the hospital staff, Bailey proposes the creation of a free clinic, and a Seattle Grace doctor receives a proposal of a different sort.

The race for the Chief's position is on, as the doctors compete for Richard's affections, a surgical patient endangers the lives of those around her.

The interns of Seattle Grace are challenged like never before when they go to the scene of a terrible ferry boat crash.

Derek rescues a drowning Meredith, but was he in time to save the woman he loves?

Meredith's fight to live affects everyone at Seattle Grace.

The race for chief heats up after a new competitor enters the fray, tensions escalate between Izzie and George, and Callie must reveal a big secret.

Izzie is reeling from the realization that she and George slept together, but George doesn't remember anything. All he knows is that he has a killer hangover...

Izzie faces her past and finds comfort in George, while Alex becomes more attached to Jane Doe, Meredith and Derek question their own status, and Cristina resolves to fight for her relationship with Burke -- despite her past with Colin Marlow -- .

As the interns of Seattle Grace cram for their upcoming exam, the attendings vie for the Chief's position by tending to the chairman of the hospital board after he's admitted as a patient. Meanwhile, Burke struggles to involve Cristina in the wedding planning, things heat up between Addison and Alex, and Derek questions his relationship with Meredith.

Addison takes temporary leave from Seattle Grace and makes a road trip to Los Angeles in order to visit some old friends from medical school. As Meredith continues to bond with her stepmother, Susan, Cristina reluctantly plans her wedding with the assistance of her mother, Helen, and Burke's mother, Mama Jane. Meanwhile, Derek must perform emergency surgery on Ava/Jane Doe, as Alex continues his unfailing bedside manner with her.

In Los Angeles, Addison deals with a difficult delivery after hearing bad news about her own fertility. She's also reminded that there's "an empty office" at the Oceanside Wellness Center. In Seattle, Derek performs emergency surgery on Ava as Alex lends emotional support; doctors find the cause of Susan Grey's hiccups; and Burke and George ask Bailey for marital advice.

The interns take the biggest test of their careers, their first-year medical exams, as the residents attend to three injured mountain climbers. Meanwhile Callie's suspicions of George and Izzie grow, and Cristina struggles to write her wedding vows.

Cristina and Burke's wedding day arrives along with the interns' first exam result and a successor to the chief is named.