Tucker's Law — Robert H. Redding

On a trail drive to Abilene, Brad Tucker, trail boss for the EW ranch, and his men are raided, his herd rustled and all but two of his crew killed deliberately. They managed to escape the slaughter, Brad, a young puncher named Red, and Stace, a man with secrets.

In Abilene, Tucker happens upon Gail Fanchy, owner the GF spread, which, a few weeks before, had also been rustled. Like Brad, all the crew had been butchered, including her father. Gail has remained at the GF ranch to take care of business but traveled to Abilene with the hopes of learning who killed her father and the crew.

As Tucker, Gail, Stace and Red team up to seek revenge, Slick Comer, and his accomplice Ten, gather up a gang of rustlers to continue pillaging the nearby ranches. Comer is the brains, Ten is the gunman who's motto is "Dead lips don't talk." He sees to it all humans on a drive he rustles are killed.

With the increase of more rustling and merciless killing Tucker, along with these three friends, eventually learn about Slick and Ten and set out to prove that they are the gang responsible in a battle to the death.