Distinctive gold cuff links provided a recognition signal between Soviet mole Pyotr Popov and his CIA contacts.

A Private Tour of the CIA's Incredible Museum

Inside the agency's headquarters is a museum filled with relics from half a century of cloak-and-dagger exploits

VIDEO: The CIA Trained These Animals to Spy for Them

The government agency used birds, cats and even dolphins to help them on covert operations

Unveiled at a recent ceremony in Washington honoring Virginia Hall, this portrait will be added to the CIA's Fine Arts Collection. Painted by artist Jeff Bass, it shows her transmitting messages from occupied France using her suitcase radio. The painting was underwritten by a donation from attorney Robert Guggenhime.

WANTED: The Limping Lady

The intriguing and unexpected true story of America's most heroic—and most dangerous—female spy

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