Sunset Motel — Joe Hilley

When the bodies of Margo Doucet and Paul Elliot are found in a motel room, everyone thinks Margo's husband, Willie Gene, killed them in a jealous rage. Evidence seems to point to him, too, and he's charged with their murders. Willie Gene turns to Mike Connolly for help. Mike soon learns the dead man was an engineer set to testify against Margo's cousin in a multi-million-dollar lawsuit. That's when Mike realizes the affair is just the beginning of the story. 

Defending Willie Gene uncovers a world of corporate corruption, loan sharks, and organized crime and Mike discovers enough motive to implicate everyone involved, but all he needs is evidence that exonerates his client. He finds it, but if he uses what he knows in court, the lives of everyone he cares about will be at risk.