Who is Tessa, and what does she want with Stefan? 

When The Vampire Diaries returns for Season 5 Episode 3 ("Original Sin"), the search is still on for Stefan's whereabouts, but now, there's another person on the hunt for the sensitive Salvatore — a young woman named Tessa (guest star Janina Gavankar), and she's up to no good. 

According to the official episode synopsis, Tessa thwarts Katherine, Elena, and Damon's search party. This might have something to do with why Tessa was pointing a gun at Katherine in the Episode 3 spoiler pics. Why does she not want Stefan to be found? Is there something she knows about his past? Cue a "flashback to a distant time and place" where we'll get to see how Stefan and Tessa met. Tessa has her own motives for finding Stefan, and we have a feeling her master plan isn't going to go over well with the Mystic Falls gang. 

Meanwhile, Matt's life is put in danger after Silas forces "an unwilling accomplice to help him search for Katherine." Is Matt being forced to help Silas? Or could it be Jeremy? Whoever it is, we're really tired of seeing Matt's life being put on the line. We guess that's just par for the course when you're the only human in Mystic Falls.

Finally, Silas will reveal the true reason he's so determined to find Katherine, which then leads to a "disturbing new reality" for Damon and Elena. Does this revelation somehow bind Elena and Stefan? We'll have to wait and see, TVD fans! 

Check out the full CW synopsis for Season 5, Episode 3 ("Original Sin") below: 

When Elena and Katherine have the same dream that Stefan is in danger and desperately needs their help, they convince Damon to help them find Stefan. However, their plans are thwarted by a mysterious young woman named Tessa (guest star Janina Gavankar) who seems to know everything about Stefan's history. In flashbacks to a distant time and place, Tessa reveals the shocking secrets in her past and what she has planned for the future. She also has a disturbing message for Damon about his own future.  Silas (Paul Wesley) forces an unwilling accomplice to help him search for Katherine, leading to a confusing and life-threatening situation for Matt.  Finally, Silas reveals the reason he's determined to find Katherine, and Damon and Elena face a disturbing new reality.

Are you loving this season of The Vampire Diaries? Sound off in the comments below! 

Catch the next episode of The Vampire Diaries on Thursday, October 17, 2013, at 8 p.m. ET on The CW, followed by Reign.

Crystal Bell is an editor at Wetpaint Entertainment and our resident fangirl for all things The Vampire Diaries. Follow her on Twitter and Google+!