This is book number 1 in the Unwind series.
I read Unwind in between 8th and 9th grade for school and I was instantly hooked! I hunkered down in my room for the entirety of a day so I could finish the whole thing and I bought the rest of the series shortly after. It's such a dark story but Schuster tells it in a way that saves room for excitment and character drama. It leaves you thinking about what's ethical in a world with such advanced technology. I come back to this seires often.— LJ