The Dragon's Heart (Previously known as Potentials)

Evelyn is a young girl of 18, and while walking home one night from her midnight physics class is kidnapped. She has no idea who her kidnappers are, or even if they are human. Evelyn keeps hearing them talk about her being a potential. Whats a potential and what are her kidnappers going to do with her? Who's the Stranger that says she is his, and what does this dragon tattoo on her neck mean? To top everything off, she has people questioning her humanity. Is she really human, or something more?
*i know the description is absolutely crappy, but i promise you the book is way better than the description.*