Slocum Rides Alone — Jake Logan

WILD JUSTICE. Wesley Putnam was Head Detective for the Arizona Cattlemen's Association, and the best friend Slocum ever had -- until four fugitive rustlers burst into a cantina and gunned Wesley down in cold blood. All Slocum got from the dying friend was a vague description of the gunmen, and all he gave in return was a solemn pledge: to pursue these men to the ends of the earth if necessary, and to judge them by the ancient law: blood for blood.