The world building was interesting and the best part of this book.
This read like Twilight fanfic, but I'm not sure if it is. I will look into this.
I found it hard to believe that an 80 year old Immortal would act/think like a 17 year old girl. The idea of Immortals was interesting, but the execution seemed flawed. Again, I am not the audience for this book, but I would have preferred if Charity/Emily actually thought/acted like an adult woman, when not masquerading as 17 year old girl.