The Underground Railroad by Colson Whitehead:
To hear his valet Prideful tell it, James confined his erotic energies to specialized rooms in a New Orleans establishment. The madam was broad-minded and modern, adept in the trajectories of human desire. Prideful’s stories were hard to believe, despite assurances that he received his reports from the staff of the place, with whom he’d grown close over the years. What kind of white man would willingly submit to the whip?