Top Secret: Inside the World's Most Secret Agencies

For the first time ever, peer through the veil of America's most covert espionage agency, the NSA, as they listen in on global communications, break codes, and defend the computer network in the new cyberage from a potential electronic "Pearl Harbor."

Threatened on all sides, the security of Israel depends on the Mossad, a small but daring group of patriots whose mission is to make war through deception and stem the tide of terrorism before it crosses their border

They are the most celebrated and admired police force on earth, but Scotland Yard is also a vast, hi-tech agency of undercover operatives and deadly-accurate snipers who fight terrorisms and organized crime on a global scale.