A new Netflix documentary about the Zodiac killer explores one of the most famous unsolved murder cases in the country — and it has a new detail: The prime suspect worked as a teacher in Atascadero.

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Code- and cipher-breaking have been in operation for centuries. However, cryptanalysis – the art of deciphering encoded messages – took on a new importance during WW2 as British boffins ...

Bernard worked in codes and ciphers for the Royal Air Force, the RAF. He remembers first joining the unit. Bernard: There was a machine there, it was like a large typewriter. I said to the officer ...

Here’s everything you need to know about one of the most notorious American serial killers and their secret code. In November 1969, the Zodiac Killer sent a 340-word cipher to the San Francisco ...