Grendel (1971) is arguably Gardner's most renowned novel. The narrative reimagines the Anglo-Saxon epic, Beowulf, from the viewpoint of the monster.

Beowulf is hailed as a masterpiece of medieval literature, weaving a story of heroes, monsters, life, and death. Readers of Grendel are encouraged to also explore Beowulf.

Gardner's guide for aspiring writers, The Art of Fiction: Notes on Craft for Young Writers, delves into his philosophies on art and life. The book also includes various exercises intended to inspire writers.