Ceremony (Spenser ) by Robert B. Parker
Pretty teenager April Kyle is in grown-up-trouble, involved with people who'd beat her up for a dollar and kill her for five. Now she's disappeared, last seen in the Combat Zone, that side of Boston where nothing's proper, especially the sex for sale.
With Hawk, his sidekick, Spenser takes on the whole X-rated industry. From a specialty whorehouse in Providence to stylish