Zodiac liked to mail ciphers, but did you know some people tried to make their own for him to read?
Learn more about this and other ways people tried to catch the Zodiac Killer in the latest episode of Let's Crack Zodiac.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.