3 books for deep summer reading

There's a common idea about summer reading: It's the “beach reads” idea that from Memorial Day to Labor Day every year, readers like to sit back, sigh contentedly, and luxuriate in lighter fare, in books about good-looking divorcées finding true love, or wise-cracking Special Ops teams foiling plots to blow up the Trans-Siberian Railway.

But there's also a dedicated cadre of readers for whom summer vacation means a chance to take a really deep dive