The Vampire Diaries The Vampire Diaries

The moon is full and the wolves are howling in The Vampire Diaries' final new episode until January (airing tonight at 8/7c on The CW). No one in Mystic Falls — good or bad, human or supernatural — is safe. "Elena takes it all on herself," says Nina Dobrev, who does double-duty as the selfless heroine ready to do whatever it takes to save her loved ones and as Katherine, the seductive, selfish vampire currently stashed in the town's blood-sucker tomb. While Elena is in deep emotional pain, "everyone thinks she's unstable," says Dobrev.

Meanwhile, Tyler (Michael Trevino) is in physical hell as he endures his first werewolf transformation. "We shine the light on the horror and the pain," Dobrev says. "It's very intense!"

There could be a lot more pain on the way, especially for Damon (Ian Somerhalder), Stefan (Paul Wesley) and the other vamps, now that Mason's aggressive pal Jules (Michaela McManus) is sniffing out what happened to her missing furry friend.

Jeremy (Steven R. McQueen) tries to play hero and again suffers for his decision, and at the end of the episode, "somebody is at serious risk of dying," says Dobrev.

But it's not all blood and guts. Battling sibs Damon and Stefan bond trying to keep Elena safe from Elijah (Daniel Gillies), one of the ancient Original vampires; and Jeremy and Bonnie (Katerina Graham) grow closer, as do Tyler and baby vamp Caroline (Candice Accola). "I have an especially steamy scene," Dobrev reveals. "I won't tell you which of my characters is involved or who her partner is, but it is sexy and shocking!" Sounds kind of like every episode of The Vampire Diaries!

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