2x25 17 Seconds
A shooting a nearby restaurant bombards the hospital with plenty of gunshot victims -- and one intended victim that didn't get shot, but is a pain to everyone nonetheless. Burke is still mad at Cristina, and he lets Alex go with him to retrieve a heart and not her. Cristina winds up on the case of a couple where the boyfriend used his girlfriend as a shield during the shooting. When Izzie finds out that the heart is for Denny, she begs Bailey to be on the case, so she can tell Denny the good news and prep him. Meredith works with Callie on a victim who was shot in the leg. She uses the time with Callie to pick her brain about bone cancer in her dog, but Callie doesn't have time for any dog talk -- until George says he has a right to be mad at Meredith, but Callie doesn't. George and Derek attend to a victim left brain dead -- and pregnant.