sentences:  The investigation quickly takes him into a deeper, and more dangerous, blackmail plot involving pimps, a high class madam, and a vicious shylock.Marty Rabb's wife, Linda Rabb, lived a secret life as a prostitute and made a pornographic film that is the backbone of the blackmail issue.Spenser must deal with the shylock, Frank Doerr, and his huge bodyguard before he can deal with the actual blackmailer (which turns out to be the Red Sox broadcaster, Bucky Maynard).