Plot synopsis: From bizarre ancient markings to random numbers and letters, codes and ciphers have been used for millennia to send secret messages, hide identities and operate outside the law. Unravelling these codes can unlock military secrets, unmask deadly enemies and even decode lost civilizations. Now, Cracking the Code uncovers some of the world’s most famous – and infamous – encryptions. Revealing how they were decoded, the brilliant minds who cracked them and the mysterious secrets they were hiding…