This post-Apocalyptic award-winning tale of Catholic Monks who preserve learning to rise from the Dark Ages when society's survivors blame education and kill anyone having to do with technology and nuclear science in particular, is perhaps the best narrated of all audiobooks with multiple narraters and sound effects.
A monk novice, Brother Frances discoveries a fall-out shelter 600 years old, containing the tooth and skeleton of the wife of the Blessed Liebowitz, the founder of the order who taught his monks to collect books and memorize them and or pass them along AKA Bookleggers.
Blessed Liebowitz had been a nuclear engineer who sought refuge in Holy Mother Church. He is later betrayed by a friend and was martyred.
Hope is carried by the bookleggar monks but the ending is cyclically chilling but hopeful in the stars.