Somewhere around the middle I got lost a bit. When the beings manifested themselves. That was a bit too much to keep track of in, maybe just because I was listening to the audio book. I read a message on my phone and suddenly everything was different within seconds? That was one layer of twists and complications too much for my attention span. But apart from that I loved the writing and the narration. Especially how Saru was written was just brilliant. Funny, charming, ... Looking forward to the next Discovery novel. So far none of them disappointed.