The Omaha Heat — J.R. Roberts

To the Gunsmith, there's no one more low-down than a rich man who pays other people to do his dirty work. Michael Percy. a businessman from Omaha, Nebraska, seems to be in the habit. First, he has his own mistress killed. Then, he has a corrupt sheriff try to pin the murder on one of Clint's lady friends.

But it's even worse when a rich man bites off more than he can chew. Percy brings a hired killer into town to put Clint six feet under. Money might buy a lot of things, but Michael Percy and his gang are about to learn that all the money in the world won't make the Gunsmith go away...