In The Greatest Spy Stories Ever Told, our editor has pulled together some of the finest writings about spies that capture readers imaginations. The one thing the heroes in this collection have in common is the ability to seamlessly shift identities. Each of the men and women in these stories had the courage to meet and study their enemies, gather critical intelligence, and then relay those secrets at risk of being exposed-to do what they had to because that was their duty and the lives of others meant more to them than their own.

Chosen from hundreds of accounts of singular devotion to duty, the stories in Greatest Spy Stories stand out for their jaw-dropping tales of bravery. They are the best. No small feat.