Northern California was terrorized by a deranged killer during the late 60’s and early 70’s. He taunted police with phone calls, letters, and ciphers. But despite law enforcement and community efforts, this horrific killer has never been caught.

https://www.patreon.com/ColdBrewCrimes

HISTORY: https://www.history.com/articles/the-zodiac-killer-a-timeline

LETTERS: https://zodiackillerfacts.com/zodiac-letters/

9NEWS: https://www.9news.com.au/world/what-are-the-zodiac-killer-ciphers-z-13-32-40-340/42da7f8c-5be0-4657-a08f-33959d79fa52

WOODENBOAT: https://forum.woodenboat.com/forum/the-bilge/253322-