It began with the 12:10 to San Antone, and ended with a pitched battle in Mexico's high sierras. What linked both events was a blood-hungry outlaw called Whip Becker, who was also called the Dragoon Demon after the powerful handguns he used so ruthlessly. What was Becker planning, with a batch of stolen bolt-action Mauser rifles and U.S. Army uniforms? Lester Dukes, the Governor of Texas, had a bad feeling he was trying to engineer a war between Mexico and the United States. And to prove it, he put his top Enforcers, Yancey Bannerman and Johnny Cato, on the case.
But by the time they found out what Becker really had in mind, there wasn't a single thing they could do to prevent it!