Unpopular opinion, this this just didn't do it for me. I loved that it was set in Chicago. I initially loved that it was a quick, punchy read, until I realized it was also lacking a lot of its substance. The science in here is great. But the whole time I was kind of like, "why do I care?" It was action driven, though often it felt like action for action's sake. I appreciated Jason's driving want, but the characters felt so thinly drawn it isolated me from this a bit. Like, imagine drawing in the importance of choice from a position of knowing a more firm version of Jason. It just all felt so easy for how hard it really was. 
 Ultimately, it felt like this wanted to be a movie. And it would probably make a decent one. But I wanted more from the book. Though it wasn't my favorite, I am excited to donate my copy to the high school. I think teens will respond to the fast-paced nature of the book. And it will introduce some cool science.