I'm disappointed, because the story sounded interesting, with lots of potential, but it overall fell flat. The writing was extremely mediocre and often cliche. Changing povs was interesting, but often hard to pick up on who was speaking until a few paragraphs into each section. The plot was typically either repetitive or advancing too quickly and conveniently. I also got extremely annoyed every time any of the non-modern characters used modern language.
I also thought this would be a standalone, so I'm peeved that I got a cliffhanger to a mediocre book.