With the arrival of the full moon, Elena tries to prepare for whatever Klaus has planned and Tyler faces his second transformation. The terrifying events quickly spin out of control, despite an unexpected act of courage. Finally, Damon admits the truth to Stefan about a terrible new development they must face. 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