16 Times The Vampire Diaries Shocked Our Socks Off

In her grief over Jeremy's (second, but not final) death, Elena loses her marbles and can't handle the pain. In a crazy sequence of events, she burns her house to the ground and flips her humanity switch. This is a big deal, because Elena is notoriously self-righteous and preachy, so it's a MAJOR turn of events to see her get down and dirty.