The Cry of the Guards (1970)

On a construction site in Senegal, as project supervisor Horn is welcoming his young partner Léone into the hut he shares with young and impetuous engineer Cal, a black man called Alboury appears outside the railings surrounding their quarters. Inflexible, hovering like a ghost in the darkness, he is determined to stay there until they return the body of his brother to him, who was killed on the site.