Owen finds Meredith and she tells him Cristina is operating on Derek. He goes in to the OR but we're shocked to find Clark standing there with a gun to Cristina's head: "Stop fixing him," Clark orders. "Just let him lie there and die."
Cristina keeps operating anyway. Owen tells Clark, "She is the woman that I love. You shoot her and I will kill you."
"I came here for justice. An eye for eye. The only person I want in this room is Shepherd."
Meredith appears and says, "Shoot me. I'm his wife. I'm your eye for an eye." He turns the gun on her, but Cristina blurts out that Meredith is pregnant. Clark hesitates and when Owen tries to get the gun, Clark shoots him instead. Jackson tricks Clark into thinking that Derek has flatlined, so he'll leave, but Cristina manages to save Derek after all. Owen's wound is a through-and-through but as Meredith goes to help him, April asks her if she's been shot too, as she's bleeding. We see Meredith wince, but she says, "I'm okay. I'm having a miscarriage."