"Le Dernier Jour d'un Condamné" by Victor Hugo is a thesis novel published in 1829. The work takes the form of a condemned man's journal during his final twenty-four hours, chronicling approximately five weeks from his trial's verdict to his execution. Through this interior monologue filled with anguished reflections and memories, Hugo creates a political plea against the death penalty, presenting raw testimony of a prisoner's psychological and physical suffering without revealing the man's identity or crime.
Wikipedia page about this book: en.wikipedia.org/wiki/The_Last_Day_of_a_Condemned_Man fr.wikipedia.org/wiki/Le_Dernier_Jour_d%27un_condamn%C3%A9