Season 6 concluded with a two hour nail biter--a distraught husband of a dead patient comes to the hospital to take out those responsible for his wife death. On his list: Lexie, the Chief, and of course, Derek.
Short Term Effects: 10. Cristina has to perform a complicated surgery under duress, Derek nearly dies, Meredith suffers a miscarriage, and many doctors die.
Long Term Effects: 8. Cristina gets P.T.S.D. and gets married to Owen. Derek becomes an adrenaline junky, Meredith finds out her body and babies don't go together well, Lexie has to go to the psych ward, and Alex breaks up with her. The only people coming out of this ok is the Chief, who reclaims his place as the one and only Chief of Seattle Grace Mercy West.
Season 6, Episodes 23 and 24, "Sanctuary" and "Death and All His Friends"