The Cheaters by Orrie Hitt

The 1960 Sleaze-Noir classic! Clint Mayer is a big man with big dreams. Or so he thinks. When Clint leaves Beaverkill for the rough and tumble dock town of Wilton, he hooks up with Charlie Fletcher, good time saloon owner and businessman. One of the businesses Charlie runs out of the bar involves a string of working girls, but he has to pay off Detective Red Brandon and it's wearing him down. He's had enough. Clint agrees to buy him out, but then he meets Charlie's wife, Debbie. Clint thinks he can find a way to keep the bar, manage the girls and stay away from Brandon. He may even come away with Debbie. But Debbie has her own ideas.