

6.038 minSeason 1 • Episode 8
LatestWhat leads someone to spy against their own nation? Motivations vary but tend to fall into one of four categories, as notorious cases demonstrate.
The spy game is a serious business, and throughout history, the tools and technologies developed for it have mattered as much as the spies themselves.
Production
Ridiculous reenactments that walk the line of cheesy brilliance.
Writing
Narrator treats poison-tipped umbrellas with appropriate gravity.
Trivia, insights & behind the scenes
The CIA's 'Acoustic Kitty' project — wiring a literal cat for surveillance — cost $20 million in 1960s money and failed immediately when the cat got run over by a taxi.
The series quietly reveals that most 'spy gadgets' were either impractical failures or stolen from the other side, undermining decades of cinematic cool.