The world has its fair share of serial killers, with some who have not been caught and are probably running in the wild freely with their real identities still unknown--such as the case of the Zodiac ...
Codebreakers translated a mysterious coded letter from the Zodiac Killer a full 51 years after it was first sent. The FBI has confirmed the results.
The expert cryptanalyst and the Sunday-puzzle expert alike rely on the fact that letters have their own personalities. As David Kahn writes: “To the casual observer, they may look as alike as troops ...
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