Nina Dobrev plays upwards of three characters on The Vampire Diaries, but she was focused in on one of them recently. In a behind-the-scenes photo, the gorgeous brunette was working on something special in the studio — but who was it for?

While all of Nina’s characters are great, everything comes back to Elena Gilbert, which we saw as she did ADR for a scene. Unfortunately, it wasn’t a spoiler for an upcoming episode — it was from Season 5, Episode 4: “For Whom the Bell Tolls,” which aired on October 24.

In the pic, Nina is reading from Elena’s lines as her character looks down on screen, showing off that signature pink streak at college. The work just never ends for her, does it? “#TVD time in 1 hr 13 mins…” she wrote on Thursday night. “Here's a little teaser from ADR ;)”

This wasn’t the only behind-the-scenes pic that Nina shared, though. She also had fun for Throwback Thursday, posting some photos of Elena’s doppelganger Katherine having fun in the tub. As if we needed to be more jealous of her, she showed off her amazing legs and near-naked body, covered in bubbles. Maybe we can just be her new twin… or triplet. Doppelgangers for the win.

Oh, and to top it off, she also posted photos of Katherine and Jeremy (aka her and co-star Steven R. McQueen) all bloodied up on set. These pics, along with the bathtub ones, were from the Season 5 premiere. Hopefully she starts tweeting out spoilery ones next!

The Vampire Diaries airs on Thursdays at 8 p.m. ET on The CW.

Alyse Whitney is Assistant Editor at Wetpaint Entertainment. Follow her on Twitter and Google+.