Domingo's trail

Vicious Mexican bandit, Estrada, is holding an American to ransom in the Sabinas Valley; he has arranged for two different expeditions to come and shower him with gold in return for a safe release. But a mysterious Mexican named Domingo appears, warning that the captive is dead and that Estrada means to slaughter them all. With the combined ransom parties now joined in their mission, they are ready for bloody battle. Can Domingo's advice be trusted? And will all who follow his perilous trail survive?