The Vengeance Man (Fawcett dl645)

Jim Wilson is a rough-and-tumble road contractor in Moline, South Carolina, a corrupt place where only the most savage survive. Wilson makes no apologies for his ferocity. Raised by an uncle who regularly whipped him, used to taking beatings until he learned to fight back, Wilson lets no-one take advantage of him. After revenging himself on his cheating wife, he takes up with her best friend, an ambitious woman whose ability to connive and manipulate are more than equal to Wilson's.