Tonight’s episode of the CW’s The Vampire Diaries will take us to the villainous vampire Katherine’s past. In “Katerina”, Elena goes looking for the truth to Katherine’s history and what it means for her own future. Check out the episode synopsis, promo, and sneak peek below. Trip to Bulgaria, anyone?

The Vampire Diaries: Episode Synopsis for “Katerina” (Season Two, Episode Nine)

Elena (Nina Dobrev) puts herself in a dangerous position as she searches for the truth about Katherine’s past and what her own future may hold. Knowing that Stefan (Paul Wesley) would never agree to her plan, Elena swears Caroline (Candica Accola) to secrecy.

Damon (Ian Somerhalder) uses a new-found confidant to help him try to discover the real purpose and power of the moonstone. Jeremy (Steven R. McQueen) and Bonnie (Katerina Graham) meet Luka (guest star Bryton James), a new student with a surprising family history. J. Miller Tobin directed the episode written by Andrew Chambliss.

The Vampire Diaries: Extended Promo for “Katerina”

The Vampire Diaries: Sneak Peek at “Katerina”

Watch The Vampire Diaries on the CW, Thursdays at 8/7C.