Mengliad by Jana Janeway

It's just an average day for Jessica Mitchell, until it's not. And it all starts with the strange flu bug she seems to have caught.

While on her way home from work, she passes out in Central Park, only to regain consciousness hours later under the gaze of a mysterious, compelling stranger. This man offers his assistance, subsequently introducing her to a world she knows nothing about.

She's not his problem, but Craddock Daniels feels inexplicably drawn to the beautiful redhead from the park. After determining that she's an Accidental Convert - a Human changed into one of his kind without knowledge or consent - he becomes intent on helping her, regardless of the personal costs.

Initially, Jessica is reluctant to believe what Craddock tells her, but after the unsettling reality sinks in, she accepts that she has no choice but to follow him and his friends. Changes are taking place, and she is now in danger because of them.

Mengliad, Book One of The Mengliad Series.