Blood Calls Blood

In a frontier town between the USA and Mexico, Sancho and his gang assault a monastery, kill a few monks who try to oppose the invasion of the sacred building, and go away with a precious loot, including the sacred custody, a work of art in gold and diamonds. Andrej, a lonesome cowboy, is informed of his brother's death, one of the monks, and starts a search for the gang.

IMDb 5,11h 28min1968