4.5 stars. Holy shit, wtf did I just read? I was expecting none of this. None. Once again, a perfect fall read that I did not pick for that reason. I wasn't expecting the outbreak and the AI situation. So perfect for spooky October. I love Kady and Aidan. And to be honest I'm glad I didn't wind up listening to the audiobook since that might have been too much for me. I am all in to continue this sci-fi, space opera, horror trilogy. Though a couple of things were stretching the bands of believability and the very end was typical ya non commitment in my opinion. But that didn't take away much. Thoroughly enjoyed this breathtaking ride. First time reading anything from either author and I am not disappointed. This one lived up to the hype.