Gator Kill — Bill Crider

After he failed to find his missing sister, whose remains finally turned up in a bag in an overgrown field, Texas PI Truman Smith retired to become a housepainter on Galveston Island. But when an alligator is killed and its carcass left on display on a family friend's property, Tru is persuaded to search for the culprit. Soon the brooding gumshoe is stumbling over the bodies of dead humans, is shot at and run down by a souped-up four-by-four as he's embroiled in a plot complete with crooked police, a possible land-grabbing scheme and bad guys who, but for their lack of redeeming good nature, could be Damon Runyon inventions.