See the promotional images and read the synopsis for The Vampire Diaries season 5, episode 3, titled “Original Sin.”

The Vampire Diaries season 5 premieres next Thursday, and the episode “I Know What You Did Last Summer” will pick up a few months after the season 4 finale.

Jumping ahead two weeks, we’ve got season 5, episode 3, titled “Original Sin.” The CW has released the official synopsis for this episode, which you can read below:

SECRETS OF THE PAST – When Elena (Nina Dobrev) and Katherine (Nina Dobrev) have the same dream that Stefan (Paul Wesley) is in danger and desperately needs their help, they convince Damon (Ian Somerhalder) 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 (Zach Roerig). Finally, Silas reveals the reason he’s determined to find Katherine, and Damon and Elena face a disturbing new reality.

A lot is revealed in this description: most importantly, we learn that at this point, Stefan still has not been found, which means that Silas is still at large.

We are also introduced to Stefan’s past love Tessa (Janina Gavankar), and with her come some shocking reveals about Stefan and Damon’s past (and future?!).

We wonder if Silas’ reason for needing Katherine has to do with them both being (and/or having) doppelgangers. Are Katherine, Elena and their original version Tatia perhaps linked to Silas’ first love, and are they doomed to repeat their tragic love story every time they are reborn?

It certainly seems that they are all connected, seeing as Katherine and Elena share a dream about Stefan.

We also have some promotional stills for “Original Sin,” released by The CW via KSiteTV:

And finally, check out this cool promo shot of Tyler (Michael Trevino), released on The Vampire Diaries‘ official Facebook page:

The Vampire Diaries season 5, episode 1 “I Know What You Did Last Summer” airs Thursday, October 3 at 8/7c on The CW.