Rancher Sam Catlan and his two sons had been murdered—shot in the back by person or persons unknown.
Sam Catlan had many friends—all of whom wanted to see his death avenged.
But one young man in particular, to whom Sam had been like a father, swore he would hunt down the killer and pay the debt he owed the kindly old man who had raised him.
It was no empty vow. For the young man's name was ... Waco.