From Memphis, a new political thriller by Mike Hambrick: "J. Edgar Hoover was standing at his window looking down at Pennsylvania Ave. It was his favorite spot for thought. Clyde Tolson was sitting dutifully in front of the Director's desk. The two men — who between them wielded more power than the President and Vice President of the United States — had been keeping tabs on King since 1955. In recent years, that effort had recently increased dramatically to include wiretaps, 24-hour survei...