Blake Crouch seems to make a habit of taking great ideas for science fiction novels, going as far as he can with the idea — and then going further. Much further. So this book, which starts out with quantum physics and multiple universes while telling a good human story about chances missed (a theme also explored in Recursion, which I recently read) — winds up with a completely bonkers ending. Still, Crouch writes very well, his characters are likeable and you do care about them, and he’s reinvigorated science fiction, at least for me, giving me the appetite to read more. So if you’re willing to accept a premise that’s going to go way off the charts, this is a recommended book.