25. “Death and All His Friends” (Season 6, Episode 24)
Derek is in surgery after being shot by Clark. Cristina operates and orders Meredith to wait outside. We find Clark with a gun to Cristina’s head ordering her to stop operating on him and to let him die on the table like they did his wife. Meredith offers herself to the shooter but Cristina screams that she is pregnant. He ends up shooting Owen. Jackson fools Clark into thinking that Derek has flatlined and Cristina saves Derek. Clark shoots himself and Meredith has a miscarriage.
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24. “Sanctuary” (Season 6, Episode 23)
Meredith is pregnant. Gary Clark, who blames Derek for his wife’s death, enters the hospital and shoots Reed in the head. He then shoots Alex. Clark asks Cristina where he can find Derek and responds with, “Have a nice day.” Derek orders a lockdown. Clark shoots Charles. Derek sees Clark and not realizing that he is the shooter, tells him to get to safety. Derek attempts to talk him down. April bursts out of Derek’s office and Clark shoots him.
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