Sin in the Second City: Madams, Ministers, Playboys, and the Battle for America's Soul by Karen Abbott

This is one of the best-written non-fiction books ever, and it's largely due to to Abbott's phenomenal writing style. Taking on the story of two unabashed madams with grace and dignity, the author's respect for both her subject and the heady historical context of the time turn a salty subject into a page turner that's scholarship is all but forgotton (but don't misunderstand--it is never neglected).

Quotes and facts are seamlessly interwoven into the dueling narratives of the Everleighs' fight to elevate the prostituion business and the anti-sex-slave movement. Vintage etchings and advertisements illustrate the book perfectly and add that perfect cherry on top.