The Hole by Jose Revueltas

Set in a Mexican prison in the late 1960s, The Hole follows three inmates as they attempt to sneak in drugs under the noses of their ape-like guards. Desperate to secure their next fix, they hatch a plan that involves convincing one of their mothers to bring the drugs into the prison. But everything about their plot is doomed from the beginning, doomed to end in violence …

Unfolding in a single paragraph, The Hole is a verbal torrent, a prison inside a prison, and an ominous parable about deformed and wretched institutions creating even more deformed and wretched individuals.