@codeWhisperer: I read Sowell's "Knowledge and Decisions" (revised edition), and it was a good read. I don't tend to agree with him ideologically, but he is right more often than he's not when it comes to a lot of the physics of human/cultural behavior. Also, Riley Sager's "The Only One Left" is pretty good. Sophie Hannah's Poirot novel, "The Monogram Murders", is legit perfectly Poirot/Christie, and it's not an aping or a pastiche. It's pitch-perfect.