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24 Episodes 2009 - 2010
Episode 1
Thu, Sep 24, 200960 mins
Covering days one through 13, everyone at Seattle Grace fights to save Izzie and George's lives and then deals with the aftermath. Elsewhere, Hunt treats a double amputation, and Arizona has a teen with painful growth spurts.
Episode 2
Thu, Sep 24, 200960 mins
During days 20 through 40 the staff continues toward acceptance. Meanwhile, Arizona takes a manipulative step to diagnose her pain patient and Hunt's amputee patient sinks into a deep depression.

Episode 3
Thu, Oct 1, 200960 mins
As hospital personnel jockey for notice to keep from being fired, Izzie returns to surgery early and Bailey's triple aneurysm patient refuses her procedure because of her schizophrenic son.

Episode 4
Thu, Oct 8, 200960 mins
Meredith & Lexi's father, Thatcher, walks into Seattle Grace with a need for a transplant that can not happen from outside his family due to his recent bout with alcoholism. A patient turns to Mark with a problem that his family feels is not exactly a problem.

Episode 5
Thu, Oct 15, 200960 mins
As Mercy West merges with Seattle Grace, battle lines are drawn between the two hospital's residents over the patients.

Episode 6
Thu, Oct 22, 200960 mins
After a burn victim unexpectedly dies in the midst of a chaotic ER, the Chief and board member Jennings interrogate the residents to find the culprit, as all the Mercy West and Seattle Grace residents defend their actions in an effort to save their jobs.

Episode 7
Thu, Oct 29, 200960 mins
When Isaac, the hospital lab tech, has an inoperable tumor wrapped around his spine, he turns to Dr. Derek Shepherd to do the impossible, and Derek tests the Chief's authority when Richard objects to moving forward with the risky surgery.

Episode 8
Thu, Nov 5, 200960 mins
A generous donation is offered to Seattle Grace by the parents of Arizona's 10-year-old patient. When his condition worsens, however, she finds herself with a conflict of interest. Meanwhile, Cristina tests her boundaries with Owen at the hospital and, adding insult to injury, Alex is left with all of Izzie's hospital bills to contend with.

Episode 9
Thu, Nov 12, 200960 mins
When Owen recruits his fellow Iraqi War vet, Dr. Teddy Altman, as the new cardiothoracic surgeon, Cristina questions Teddy's abilities in the OR and the nature of their past relationship. Meanwhile Izzie returns to Seattle Grace with her high school mentor seeking treatment for his dementia, and the stress of Richard's responsibilities, post-merger, are taking their toll.

Episode 10
Thu, Nov 19, 200960 mins
As Thanksgiving, Christmas and New Year's pass, Miranda is visited by her father, William, who disapproves of her choices in life; meanwhile, Mark and Lexie must cope with the shocking arrival of a woman from his past, and Thatcher Grey questions the Chief's recent behavior as Meredith comes to his defense.
Episode 11
Thu, Jan 14, 201060 mins
Mark flies Addison to Seattle to help with a difficult procedure on his pregnant daughter, Sloan. Owen questions Teddy's motives when she assigns Cristina the lead on a complicated surgery, and Derek's suspicions are raised when the Chief recruits Meredith to assist with a high profile operation.

Episode 12
Thu, Jan 21, 201060 mins
After learning of Richard's drinking problem, Derek confronts him for the sake of his friend and the hospital, Izzie returns, hoping to reconcile with Alex, and tensions run high between Teddy, Cristina and Owen in the aftermath of Cristina's startling confession.

Episode 13
Thu, Feb 4, 201060 mins
As Derek begins his role as interim chief, he faces a potential lawsuit when Bailey and Meredith's patient awakens from anesthesia mid-surgery. Meanwhile, Teddy refuses to place Cristina on her service, as Arizona tests Alex out in Pediatrics, and Mark refuses to speak to a heartbroken Lexie.

Episode 14
Thu, Feb 11, 201055 mins
It's Valentine's Day and the doctors must treat dozens of injured people after the roof collapses at a popular romantic restaurant; Derek tries to manage his busy schedule as Chief of Surgery; Meredith wrestles with her new duties as the Chief's wife; and Mark and Callie team up to convince Sloane to do the right thing for her baby.
Episode 15
Thu, Feb 18, 201060 mins
In his new role as Chief, Derek restores the hospital lecture series, and several attendings present to the group pivotal surgical cases from their pasts: Bailey reflects on how shy she was as an intern until getting advice from Webber, Callie looks back on a polio case, and Richard recalls a case in which he and Ellis worked on a patient diagnosed with AIDS, known in 1982 as GRID.

Episode 16
Thu, Mar 4, 201060 mins
When famous surgeon Dr. Harper Avery is rushed to Seattle Grace-Mercy West, the staff is surprised to discover that one of their own is related to this legend, and his unorthodox request for his surgery causes tensions t between Derek and Richard. Meanwhile Callie and Arizona try to help Teddy and Sloan move on from their pasts and find greener pastures.

Episode 17
Thu, Mar 11, 201055 mins
A patient who needs an extremely difficult surgery comes to Seattle Grace, and it's Richard and Owen who vie for the opportunity to tackle it. But the decision lies in the hands of Derek, who deems that Owen should take on the surgery, leaving Richard bitter. Meanwhile, Bailey deals with her own personal struggles when she nervously prepares for another date with Ben.

Episode 18
Thu, Mar 25, 201060 mins
When Teddy's patient seeks to end treatment and her life, she turns to Hunt for help. The situation triggers Hunt's memories of his life at war and his past relationship with Teddy. Meanwhile, Callie and Arizona have a difference in opinion on what their future holds, and Richard tries to adjust to his role as a surgeon.

Episode 19
Thu, Apr 1, 201060 mins
When Alex's younger brother, Aaron, shows up at Seattle Grace-Mercy West with a hernia, it's up to Alex to get Bailey's approval for his pro bono surgery. Matters are further complicated when Aaron discloses that his family has not heard from Alex since he arrived in Seattle, and parts of Alex's past long kept secret are revealed to his friends and fellow doctors.

Episode 20
Thu, Apr 29, 201060 mins
Sloan returns to Mark's apartment just as she's going into labor. Teddy, Mark and the still-fighting Callie and Arizona are there to help with the birth and to get Mark through his grandson's pending adoption. Meanwhile Teddy sees Derek's invitation to illustrious cardiothoracic surgeon Tom Evans' as a threat to her future employment at the hospital, and the team work on a crab boat captain who has been stabbed with a giant shark hook.

Episode 21
Thu, May 6, 201060 mins
Bailey preps the team with mandatory sensitivity training prior to admitting a 700-pound patient with compounded medical issues, and the case proves to be challenging. Meanwhile Derek has to come face to face with a former patient's husband in a wrongful death deposition, and spending time with a heart patient's daughter opens up some old wounds for Cristina.

Episode 22
Thu, May 13, 201060 mins
An elderly patient admitted into the E.R. for a heart condition sees a familiar face, a long lost love who happens to be in the E.R. as well for a fractured arm, and the staff find themselves caught up in their love story. Meanwhile, Karev treats a troubled teenage patient whose parents brought her in for schizophrenia, and Meredith can't help but tell Cristina about her suspicions of Owen -- which inevitably messes with Cristina's head.

Episode 23
Thu, May 20, 201060 mins
Seattle Grace Hospital is hit with a crisis like no other in its history.
Episode 24
Thu, May 20, 201060 mins
Cristina and Meredith's surgical skills are put to the ultimate test.
