As the holiday season passes, Miranda is visited by her father, who disapproves of her life choices; Mark and Lexie... Full summary

Owen recruits a fellow Iraq War veteran to be the new cardiothoracic surgeon, but Cristina questions the new surgeon's... Full summary

The parents of Arizona's 10-year-old patient offer the hospital a generous donation, but Arizona finds herself in a... Full summary

When the hospital lab tech, Isaac, discovers he has an inoperable tumor wrapped around his spine, he turns to Derek... Full summary

When a burn victim unexpectedly dies in the E.R., all the Mercy West and Seattle Grace residents must defend their... Full summary

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

When Thatcher returns to the hospital with a failed liver, Meredith must save his life; Izzie empathizes with a... Full summary