Gary Jennings was a prolific American novelist, renowned for his historical novels which captivate readers by vividly recounting epochs and events. Among his most celebrated works are Aztec, which unfolds the story of the Aztec Empire up to the arrival of the Spaniards; Aztec Autumn, a narrative that picks up the tale of the Aztecs following the conquest; and The Journeyer, a detailed account of Marco Polo's travels to the Far East.

Jennings led a paradoxically picaresque life, marked by both acknowledged intellect and erudition, and a bawdy spirit. His novels, international bestsellers known for their stylish prose and lively wit, were also massive, often exceeding 500,000 words. They were widely acclaimed not only for the compelling storytelling but also for the extensive years of research Jennings devoted to each, both in libraries and in the field. Jennings' commitment to authenticity and detail was a hallmark of his work.

During the Korean War, Jennings served with distinction, earning the Bronze Star Medal—a decoration rarely given to soldier-reporters—and a personal citation by South Korean President Syngman Rhee for his work on behalf of war orphans. The sources of his erudition, however, remained somewhat of a mystery, contributing to the enigmatic allure that surrounded him.