Katherine Pierce has arrived and she's wasting no time wreaking havoc. She isn't successful in killing John, but she doesn't let that get her down. She makes her presence known to both Salvatore brothers, introduces herself to Bonnie, and sends a message by KILLING CAROLINE.
But don't worry. Our Miss Mystic Falls completes the transition and becomes a vampire, so we haven't lost her yet. Elena stops Damon from taking Caroline out, and Stefan vows to teach her how to control her urges.
Meanwhile, there's a new Lockwood in town, and he may or may not be a werewolf. Either that or he's *really* good at Brazilian Jujitsu.