Sylvio: The Preternatural (The Sylvio Series)

When doctors tell her that her cancer is incurable, Rachel resigns herself to her fate, until a mysterious man named Sylvio approaches her with a possible cure - one that will come at the cost of her freedom, and possibly, her soul.
With nothing left to lose, Rachel agrees to Sylvio's proposal. Soon, she is swept into a surreal world where she learns that the preternatural beings of legend - vampires, witches, and werewolves - are all very real.
Sylvio: The Preternatural follows Rachel's extraordinary journey of survival and self-discovery, where she finds that not all preternatural beings are evil. It's the choices we make and the actions we take that define who we truly are.