‘The Zodiac killer’ was a symbol of evil ingenuity at its peak. You can establish this yourself too by the fact that even his real name is yet unknown. He has puzzled law enforcement agencies till the present day by his coded and encrypted letters. The confirmed number of attempted murders was seven of which two survived miraculously. However, his confession is of 37 killings. He ravaged California with his evil genius plans and strategies. Using the letters he wrote to newspapers, he can be judged as a person with deep psychological issues. Despite his mental issues, his intelligence to code all the facts is a mystery.