A man who has been condemned to death by the guillotine in 19th-century France writes down his cogitations, feelings and fears while awaiting his execution. His writing traces his change in psyche vis-a-vis the world outside the prison cell throughout his imprisonment, and describes his life in prison, everything from what his cell looks like to the personality of the prison priest. He does not betray his name or what he has done to the reader, though he vaguely hints that he has killed someone; just a nameless, faceless, meaningless victim.