Zodiac killer: San Francisco serial killer's 1969 coded letter finally cracked by amateur sleuths, including Australian Sam Blake
Advertisement California: A team of volunteer codebreakers, including a Melbourne mathematician, has cracked a mysterious cipher sent more than 50 years ago to a newspaper by the San Francisco serial killer who called himself the Zodiac. The Zodiac killer – who was never caught – shot or stabbed seven people in the San Francisco Bay Area over the course of about a year in 1968 and 1969, killing all but two of them. The coded letter was mailed to a San Francisco newspaper by the Zodiac serial killer in 1969. Credit:AP The San Francisco Chronicle and other newspapers. Some of the notes were...