Grey's Anatomy

Members of the hospital staff find unique ways to deal with their grief at George's death; George's mother faces the daunting task of deciding what to do with his organs.

Members of the hospital staff find unique ways to deal with their grief at George's death; George's mother faces the daunting task of deciding what to do with his organs.

Izzie returns to work; Seattle Grace residents position themselves to avoid layoffs; Cristina tries to work with Arizona in the pediatric ward.

Meredith must save Thatcher's life; Izzie empathizes with a tumor-riddled patient; annoyed with Cristina's competitive zeal, Mark tricks her into assisting on an odd surgery.

The residents of Seattle Grace and Mercy West vie for their careers as the hospital merger begins; Arizona stands by enraged Callie.

When a burn victim unexpectedly dies in the E.R., all the Mercy West and Seattle Grace residents must defend their actions in hopes of saving their jobs.

When the hospital lab tech, Isaac, discovers he has an inoperable tumor wrapped around his spine, he turns to Derek for help; Derek challenges Richard's authority.

The parents of Arizona's 10-year-old patient offer the hospital a generous donation, but Arizona finds herself in a conflict of interest when the patient's condition worsens.

Owen recruits a fellow Iraq War veteran to be the new cardiothoracic surgeon, but Cristina questions the new surgeon's abilities; Izzie returns with her high school mentor.

As the holiday season passes, Miranda is visited by her father, who disapproves of her life choices; Mark and Lexie must cope with the arrival of a woman from his past.

Addison returns to Seattle Grace to perform a procedure on Mark's pregnant daughter; Cristina is assigned the lead on a complicated surgery.

After learning about Richard's drinking problem, Derek confronts him; Izzie returns, hoping to reconcile with Alex; tensions run high for Teddy, Cristina and Owen.

Derek faces a lawsuit on his first day as interim chief when a patient awakens from anesthesia during surgery; Mark refuses to speak to Lexie.

The doctors treat dozens of people when the roof of a romantic restaurant collapses on Valentine's Day; Meredith struggles with her new duties as the chief's wife.

Callie, Bailey and Richard present pivotal surgical cases from their pasts when Derek restores the hospital lecture series.

A famous surgeon is rushed to the hospital; Callie and Arizona try to help Teddy and Sloan move on from their pasts.

Owen and Richard compete for an extremely difficult surgery; Bailey gets ready for another date with Ben.

A patient's desire to end her life triggers haunting memories for Hunt; Arizona and Callie have different opinions about the future; Richard tries to adjust to his new role.

When Alex's brother shows up at the hospital with a hernia, Alex must get Bailey's approval for pro-bono surgery.

Mark, Teddy, Callie and Arizona help Sloan deliver her baby; the doctors treat a crab boat captain who was stabbed with a giant shark hook.

Bailey preps the team with mandatory sensitivity training prior to admitting a 700-pound patient and the case proves to be challenging in every sense of the word.

All reassess their personal lives after witnessing a chance reunion between two long-lost lovers in the emergency room; Karev treats a troubled teen.

The hospital is hit with an unprecedented crisis; Meredith and Cristina's surgical skills are put to the test.

The hospital is hit with an unprecedented crisis; Meredith and Cristina's surgical skills are put to the test.