Cracking The Code, The Cold War Code

Uncover some of the world's most renowned encryptions, revealing how they were decoded, the minds who cracked them and the secrets they masked.

The Zodiac Killer Code reveals the desperate bid to crack the crazed codes sent by America's most mysterious serial killer.

The Japanese Super Code reveals the US efforts to crack Japan's unbreakable WWII code following the horror of the attack on Pearl Harbor.

Decoding a lost civilization reveals the monumental challenge undertaken by some of the academic world's most brilliant minds.

Experts reveal the highly encrypted phones that criminal gangs use to stay under the radar, and explain how the police are turning the phones against the crooks.

A look at America's Cold War codebreakers charged with unravelling a seemingly uncrackable Soviet code and the uncovering of the Manhattan Project.

Revealing the encrypted German telegram could save Britain in its darkest hour. Can a team of geniuses decode the message in time?

Step foot on the roller-coaster ride that is cracking humanity's most complex and important code - the Human Genome. Season finale.