I loved the premise of this story: 6 astronauts that wake up in a generation ship to find their past clones dead and must investigate who is the murderer. So it is a good mix of closed room thriller/mystery and sci-fi. I liked the format: chapters alternating and revealing the background of each character. And with every chapter, you discover new things, and the characters’ past and motives get more complex as you go. It was interesting, it got me engaged to the end. I didn't want to put down this book. The ending felt a little bit too rushed and convenient, but the ride was super fun.