In the Season 5 premiere of The Vampire Diaries, we met Nadia (Olga Fonda), an Eastern European beauty who stole the Gilbert ring from Matt (Zach Roerig) during a three-some in Prague. But her TVD story didn’t end there...Nadia followed Matt back to Mystic Falls to return the ring, and to work some sort of magic on Matt! What does Nadia want with TVD’s token human?! We speculate below.

To get revenge

It’s been hinted that Nadia is on some sort of mission of vengeance, but against whom? Well, Mystic Falls has no end of suspects. One need look no further than the Salvatore brothers who, though currently de-clawed, have both left bloody trails in their wake. Could Nadia be using Matt as a pawn to get to them? After all, the Salvatore bros are suspicious of pretty much everyone, which means possessing and/or controlling someone they already trust makes for a good plan. When Nadia and her warlock friend, Gregor, performed some chant on Matt, his eyes went black. Did they cast some sort of compulsion spell? Or worse yet, switch off his humanity? (No, he’s our token human!)

To get to Katherine

You know who else is from Eastern Europe? Our girl Katherine! OK, so Eastern Europe is a big place and Bulgaria (where Katherine was born) is not the same as the Czech Republic, but that doesn’t mean these two lovely ladies don’t have some sort of connection. (Especially considering, though recently in Prague, we’re not really sure where in Eastern Europe Nadia is from.) If Nadia isn’t after one of the Salvatores, then perhaps she is after Katherine for either noble or nefarious reasons. Could the Gilbert ring somehow have led Nadia to Elena, who she mistook for Katherine? Crazier things have happened, and with Katherine human again, she is a target for enemies and doppelganger blood-seekers alike.

His hot bod

OK, so we don’t think Nadia’s chief reason for following Matt to Mystic Falls and enacting some voodoo on his person was to seduce the man, but it could have factored in. Matt Donovan has a certain animal magnetism mixed with nice guy persona that really works for him, and that’s not even taking into account his blue, blue eyes. Is there a teeny, tiny chance that whatever primary reason Nadia has for finding Matt, she is also kind of crushing on him? She wouldn’t be the first beautiful woman to fall under Matt’s unassuming spell.

What do you think Nadia wants with Matt? Share your theories in the comments below!

Catch the next episode of The Vampire Diaries on Thursday, October 10, 2013, at 8 p.m. ET on The CW, followed by the series premiere of Reign.