Le Mur. [The Wall].

Imprisoned in a cell, Pablo Ibbieta is offered an escape from his impending death sentence if he reveals the location of his comrade, Ramón Gris. Finding that he no longer cares about his cause or his life, Pablo refuses to cooperate until just before his scheduled execution, when, seeing no harm in it, he gives the authorities what he believes to be false information on Ramón Gris' whereabouts, only to find that Gris moved from his previous hiding place to the very spot where Pablo tells the authorities he may be found. Thus Ramón Gris is shot and Pablo's life is, at least temporarily, spared from death. The story is widely considered one of the greatest existentialist works of fiction.