Can a person of extraordinary intellectual capacity exist in total obscurity, and what does their life reveal about the nature of genius? Alexander Masters explores the life of Simon Norton, a brilliant mathematician who chooses to live in a cluttered, chaotic basement, challenging conventional definitions of success and societal contribution. Through years of observation and interaction, Masters documents the disconnect between Norton's profound mathematical achievements and his unconventional, often difficult daily existence.

The book provides a nuanced, observational study of a singular life, avoiding easy categorization of its subject's eccentricities. It serves as a thoughtful inquiry into the cost of intellectual focus and the complexities of human potential.