Six Wakes by Mur Lafferty
Six Wakes is one I picked up based on the blurb - a locked-room mystery in space, a sci-fi mystery.
The sci-fi hook this time around was cloning. The laws around cloning are strict, but basically, we have figured out how to make mindmaps, putting all of a person's memories, thoughts, personalities into a code that can be transferred into that person's cloned body, making an individual practically immortal and able to inherit their own belongings/money. There's some philosophical discussion about what makes a person a person, what is a soul, etc., but it's not really dealt with in depth.
The mystery set up is great. Six people wake up in fresh clone bodies, with the clear evidence that their previous bodies had been murdered, obviously by one of them, since everyone else on the generational ship is in "storage." One or more of them is the killer, but no one knows who - their memories from the last 25 years have...