He made a brief statement last week about his 20 years as a double agent.

NPR: Irish Spy May Hurt N. Ireland Peace Process

CIA, at its headquarters near Washington, can hunt for some missing cables from a Libyan double agent.

ECONOMIST: Hunt the Lockerbie cable

Sparkling in his role as a conscience-struck double agent, he fights intrigue and physical danger to triumph in the end.

ECONOMIST: Sierra Leone

The probe comes on the heels of another leak investigation involving revelations about a double agent who infiltrated al Qaeda's Yemen affiliate.

WSJ: FBI Probes Leaks About Cyberattacks by U.S.

According to the Sunday Telegraph, documents sent by MI6 to Libyan intelligence chief Moussa Koussa reveal a double agent was recruited to infiltrate an al-Qaeda terror cell.

BBC: Gaddafi

Speculation is rife that Mr Zygier, also known as Ben Alon, was suspected of being a double agent or was being threatened to hand over sensitive information.

BBC: Israel and the curious case of Prisoner X

After weeks operating undercover in Yemen, the double agent arranged to deliver the device and a trove of vital intelligence to U.S. and other authorities waiting in another country, officials said.

FORBES: Worst Job Ever: Infiltrating Al Qaeda To Steal A Bomb

This man was apparently a double agent, a turncoat.

CENTERFORSECURITYPOLICY: drapeaux-israel-ame?rique

A. wrongly accused of being a double agent and held for three years in total isolation (no reading material, no news, no human contact except with interrogators) in a closet-size concrete cell near Williamsburg, Virginia, made chess sets from threads and a calendar from lint (only to have them discovered and swept away).

NEWYORKER: Hellhole

Most people probably wouldn't want their computer to lead a double life as an agent in a seething, cybercriminal organization.

FORBES: Zombie Storm Rising