Mur Lafferty's Six Wakes
OK, this book has an AMAZING concept--it's a sci fi locked room murder mystery!! It takes place on a spaceship in the 2400s, heading from earth to colonize a new planet, and starts with all the crew awakening in their new clone bodies because all their previous bodies have been murdered! But they are all missing a looooot of memories, and have no idea who killed everyone, or why. And they all have a lot of secrets in their pasts! Now, the writing here is a little bit awkward--I definitely wished it would have been more polished. But the plot is great, and the last chunk moves a long really well. And NPR liked it! B/B+.
Full disclosure: Mur Lafferty did signings at a store where I worked and so I met her several times. She is super cool and nice.