Fool's Paradise (Jesse Stone novel) by Mike Lupica

 A man is found murdered by the lake in Paradise with no wallet or other identification. But when police chief Jesse Stone sees the body, he recognizes the man as a fellow participant in an AA meeting the evening before, a man called Paul. But at first, that's all they have to go on. They they discover that Paul had been dropped off by a taxi at the front gate of the powerful Cain family's home. Things become both more interesting and more convoluted in the original case. Then someone tries to rape fellow cop Molly, shoots at Jesse, and tries to detonate a bomb at fellow cop Suitcase's house. Is it related to Paul's murder or something else entirely? A real page-turner.