Así es (1966)

When a Bolivian Indian travels to town to sell his produce, a half-caste who usually buys his goods visits the man's hut. He finds the man's wife alone and he is miffed when the husband is not there. After she explains that the town market will pay for the goods, the half-caste lusts after the wife and attacks her after she rejects his lecherous advances. The husband returns home to find his wife mortally wounded, and she reveals the identity of her killer with her dying breath. The bereaved husband bides his time, killing the man after he has become wealthy.