Today the Zodiac letter Killer joins the long-list of our "World's greatest unsolved mysteries".


In the late 1960s a cold-blooded serial killer operated in northern California. The serial killer murdered victims in Benicia, Vallejo, Lake Berryess and San Francisco between December 1968 and October 1969. Four men and three women fell victim to this unknown killer, who became known as the "Zodiac" in a letter dated August 7, 1969 that the killer sent to the local press. The serial killer will later send another three letters and all four included cryptograms ( a type of puzzle 'encrypted in text'), of all the four letters only one has been definitely solved.
- See more at: http://www.duketundesblog.com/2015/10/saturday-digest-worlds-greatest.html#sthash.jazaudIg.dpuf