The Widening Gyre - Robert B Parker

The adoring wife of a senatorial candidate has a smile as sweet as candy and dots her "i's" with little hearts. A blond beauty, she is the perfect mate for an ambitious politician, but she has a little problem with sex and drugs—a problem someone has managed to put on videotape. The big boys figure a little blackmail will put her husband out of the race. Until Spenser hops on the candidate's bandwagon. But getting back the tape of the lady's X-rated indiscretion is a nonstop express ride to trouble—trouble that is deep, wide and deadly.