As the high school prepares to throw a "1960s Decade Dance," Elena starts receiving disturbing messages from Klaus via an unusual source. Watch free, streaming full episodes of The Vampire Diaries on cwtv.com. The Vampire Diaries Video: Watch the Vampire Diaries full episodes, previews, clips, interviews and more video. Two vampire brothers - one good, one evil - are at war for Elena’s soul in the small town of Mystic Falls, Virginia. Based on the series of books by L. J. Smith. CAST: Nina Dobrev Paul Wesley Ian Somerhalder Steven R. McQueen Sara Canning Katerina Graham Candice Accola Zach Roerig Kayla Ewell Michael Trevino Chris William Martin