PREVIEW: THE VAMPIRE DIARIES ("My Brother's Keeper")

Gabrielle Douglas guest stars on tonight's episode - Photo: The CW

THE VAMPIRE DIARIES continues its fourth season on Thursday, November 29 at 8 p.m. ET/PT on The CW.

In "My Brother's Keeper," Caroline (Candice Accola) does her best to be there for Stefan (Paul Wesley) and Elena (Nina Dobrev) in a tough time. Damon (Ian Somerhalder) tries to convince Stefan to help him uncover Prof. Shane's (guest star David Alpay) motives, but Stefan is intent on carrying out a different plan with Klaus (Joseph Morgan).

At the annual Miss Mystic Falls Pageant, Elena and Caroline give April (guest star Grace Phipps) advice on which dress to wear, while Tyler (Michael Trevino) and Hayley (guest star Phoebe Tonkin) work together on a secret project, and Damon confronts Prof. Shane with his suspicions. Alarmed by the vivid nightmares he's having, Jeremy (Steven R. McQueen) turns to Matt (Zach Roerig) for help, but the situation escalates sooner than anyone expected.

Watch a sneak peek below:





Olympic Gold Medalist Gabrielle Douglas also makes an appearance. Jeffrey Hunt directed the episode written by Caroline Dries & Elisabeth R. Finch.