The book investigates the hidden world of intelligence and code-breaking during World War II, focusing on lesser-known stories and figures. David Kahn, a renowned cryptologist, draws upon his extensive research to explore the intricate operations and crucial contributions of spies and codebreakers. The narrative delves into the challenges and triumphs of those who operated in the shadows, revealing the impact of their work on the course of the war.

This collection of stories by David Kahn is likely to appeal to readers interested in the clandestine aspects of World War II. The focus on intelligence and code-breaking suggests a detailed and analytical approach, offering insights into the strategic importance of these often-unseen operations. The book's premise indicates a narrative that balances historical fact with compelling accounts of espionage, providing a deeper understanding of the war's hidden dimensions. Readers can expect to encounter lesser-known figures and events that significantly influenced the conflict.