It’s your usual detective story, with a guy obsessed with a mystery, a femme fatale, and… an asteroid that’s about to kill most of the living things on the earth? That’s the premise for “The Last Policeman” by Ben Winters. We liked the book (and its two sequels) quite a lot, though that comes with a big caveat based on what your definition of “fun” is, and apparently if you’re a soulless monster or not. Plus: What are we reading?...