I saw a book club question that compared this to "And Then There Were None" by Agatha Christie. Let's be honest though: In the world of Christie, this was 100% a clone of Murder On the Orient Express, not None. And it's incredible.
I had a professor who once joked that if you took a concept and put in space, it would be even cooler. That's what we see here. A classic murder mystery set up set in space. The mystery itself was well crafted and I found myself constantly guessing who the murder was and while I wasn't right, I wasn't wrong either and not even mad. That to me is the sign of a well-written mystery. I loved all the characters and didn't want to see any of them erased. I was fascinated with the way Lafferty handled the ethical questions of cloning. It could have ended up REALLY dry but I was fascinated. Maybe it's just the nerd in me. I don't know. My heart was racing to the end and I was definitely satisfied with the ending.
My biggest critique of the book was the pacing could be slow at the times and there were a few areas that felt overly convenient, more so in the beginning of the story. I can't remember any specifics but I do remember a few points where I was like, "of COURSE you did, Maria."
Final rating: 4.5 out of 5. Bebe is my favorite character, hands down.