We’ve been dying to meet new character Tessa (Janina Gavankar), a woman from the Salvatore brothers’ past who shares a truth that is allegedly going to change the way we see Stefan (Paul Wesley). Well, the wait is almost over! Tessa will make her debut in tomorrow night’s episode of The Vampire Diaries (Season 5, Episode 3: “Original Sin”). And it looks like Tessa has all the secrets to how Stefan escaped his underwater prison!

It turns out that it was Tessa who arranged Stefan’s prison break from the safe at the bottom of the quarry. In the sneak peek over at E! Online, Tessa explains that she sent the man Sheriff Forbes, Elena, and Damon found drained in the box to fish Stefan out. Apparently, Stefan was too hungry to thank him and, you know, not kill him.

There’s no hint of the past connection Tessa shares with the Salvatores, but given that she managed to find and save Stefan from eternal drowning, we’re willing to give the girl a few scenes to explain herself. Stefan doesn’t seem to recognize her in this scene, though he does give her a friendly warning when he first awakens: "I don't want to hurt you, so get away from me before I rip your throat out." A vampire doppelganger with a conscience, notes Tessa. Looks like she knows more about Stefan’s situation than most…

What do you think Tessa’s deal is? How does she know about Stefan? Check out the clip at E! Online, then 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 a new episode of Reign.