I lived in NY's Hudson Valley when this came out, and know how well Carr (also a Hudson Valley resident) describes it all. I love historical fiction that mixes true and fictional characters. NY police commissioner Teddy Roosevelt sets up an unofficial team to investigate a serial killer, in an era in which such a concept is unknown.

The Alienist by Caleb Carr, ($17, Random House Trade), recommended by Rosemary at Quail Ridge Books, Raleigh, NC.