E1 - High-Tech Surveillance and an Eye in the Sky

Aired: January 20, 2021

In the spy game, if you can listen, you can learn, and gaining that crucial ability to eavesdrop has required some deeply creative ingenuity.

E2 - Deadly Poisons

Aired: January 20, 2021

For some covert missions, the goal is not information, but assassination, and lethal toxins have been deployed by spy agencies to kill perceived foes.

E3 - Sexspionage

Aired: January 20, 2021

As long as there has been espionage, sex and the promise of it have been powerful tools of persuasion and blackmail — practices that continue today.

E4 - Clandestine Collection

Aired: January 20, 2021

Methods for covertly capturing sensitive data have grown infinitely more advanced as the devices used to do so have become exponentially smaller.

E5 - Covert Communication

Aired: January 20, 2021

From old-school "dead drops" to high-tech digital transfers: Learn how intelligence officers actually acquire the information collected by sources.

E6 - Special Ops and the Saboteur

Aired: January 20, 2021

Special ops require the very best people to execute them. But some of the most famous missions in modern history relied on elite technology as well.

E7 - The Code Breakers

Aired: January 20, 2021

Encryption is a key tool for keeping valuable information secret — but some ingenious minds have managed to crack seemingly impenetrable codes.

E8 - Recruiting the Perfect Spy

Aired: January 20, 2021

What leads someone to spy against their own nation? Motivations vary but tend to fall into one of four categories, as notorious cases demonstrate.