January 1917: five French soldiers are marched to their own front lines where they will be tossed out into no man’s land with their hands tied behind their backs and left for the Germans to shoot. They were, in civilian life, variously a pimp, a mechanic, a farmer, a carpenter, and a fisherman; now they are condemned because each had sought to leave the war by shooting himself in the hand. Taken to a godforsaken trench nicknamed Bingo Crpuscule, the five are reluctantly sent out into the darkness; days later, five bodies are recovered and the families are notified, merely, that the men died in the line of duty. August 1919: Mathilde Donnay receives a letter from a dying man. In it, the former soldier tells her that he met her beloved fianc, the fisherman Manech, shortly before he died. Mathilde goes to meet Sergeant Daniel Esperanza at his hospital and there hears the story of the execution. She also receives a package with a photograph of the men and copies of their last letters. As Mathilde reads and rereads the letters and goes over Esperanza’s tale, she begins to suspect that perhaps the story didn’t end quite so neatly. And so begins her very long investigation into the mysterious circumstances surrounding the deaths of five condemned prisoners–one of whom, at least, might not really be dead.