We start with the Zodiac Killer as we start our favorite serial killers series.  Part 1 covers the murders of David Faraday and Betty Lou Jenson... this would only be the beginning of the reign of terror Zodiac brought to San Francisco and the surrounding area.  And the beginning of the mystery of the Zodiac... who remains unknown since 1968.

 Sources:

ZodiacKiller.com

Zodiac by Robert Greysmith

WIKIPEDIA 

MUSIC CREDIT FOR INTRO AND OUTRO:  

Big Rock Kevin MacLeod (incompetech.com)

Licensed under Creative Commons: By Attribution 3.0 License

http://creativecommons.org/licenses/by/3.0/