Episode 22 – Shiny Happy People

Episode 22 – Shiny Happy People

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 (guest star Demi Lovato) 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.

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Episode 21 – How Insensitive

Episode 21 – How Insensitive

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 in every sense of the word. 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.

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Episode 20 – Hook, Line and Sinner

Episode 20 – Hook, Line and Sinner

Sloan returns to Mark’s apartment, just as she’s going into labor, and 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.

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Episode 19 – Sympathy for the Parents

Episode 19 – Sympathy for the Parents

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.

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Episode 18 – Suicide Is Painless

Episode 18 – Suicide Is Painless

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.

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Episode 16 – Perfect Little Accident

Episode 16 – Perfect Little Accident

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.

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Episode 15 – Time Warp

Episode 15 – Time Warp

In his new role as Chief, Derek restores the hospital lecture series, and Richard, Bailey and Callie present to the group pivotal surgical cases from their pasts Bailey reflects on her first days as a shy resident, Callie looks back on a polio case, and Richard recalls a case in which he and Ellis worked on a patient diagnosed with GRID, a virus later called AIDS.

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Episode 14 – Valentine's Day Massacre

Episode 14 – Valentine's Day Massacre

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 Sloan to do the right thing for her baby.

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Episode 13 – State of Love and Trust

Episode 13 – State of Love and Trust

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.

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Episode 12 – I Like You So Much Better When You're Naked

Episode 12 – I Like You So Much Better When You're Naked

Derek confronts Richard about his drinking problem and the triangle between Owen, Teddy and Christina gets heavy. Meanwhile Izzy comes back to reconcile with Alex.

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Episode 11 – Blink

Episode 11 – Blink

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 on.

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Episode 10 – Holidaze

Episode 10 – Holidaze

As Thanksgiving, Christmas and New Year’s pass, Miranda gets a visit from her father, William who disapproves of her choices in life. Mark and Lexie cope with an arrival of a woman from his past. Thatcher questions the Chief’s recent behavior as Meredith comes to his defense.

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Episode 9 – New History

Episode 9 – New History

Owen recruits Dr. Teddy Altman a former Iraqi veteran, as the new cardiothoracic surgeon, Cristina questions her abilities in the E.R. and relationship with Owen. Izzie returns to Seattle Grace with her high school mentor seeking treatment for his dementia. Richard’s responsibilities, post-merger, are taking a toll on him.

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Episode 8 – Invest In Love

Episode 8 – Invest In Love

A generous 25 million donation is offered to Seattle Grace by the parents of Arizona’s 10-year-old patient, she finds herself in a conflict of interest when his condition worsens. Cristina tests her boundaries with Owen at the hospital. Alex is left with all of Izzie’s hospital bills to contend with.

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Episode 7 – Give Peace a Chance

Episode 7 – Give Peace a Chance

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.

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