50 years ago, on September 27th, 1969, the Zodiac attacked a young couple at Lake Berryessa. Bryan Hartnell was stabbed several times yet survived, but his companion, Cecelia Shepard, died days later. The episode "Lake Berryessa: By Knife" examines one of the most bizarre and terrifying crimes in history.

Written and produced by MICHAEL BUTTERFIELD for ZodiacKillerFacts.com / Copyright 2019

Voice of "The Zodiac" by John Knight / This program includes reenactments and dramatized readings by actors.

All music licensed and used by permission. “Run and Hide” and “Frozen Orb” composed and produced by Jens Kiilstofte. “Ghost” and “Creepy Piano Loop” composed and produced by JM Scherf. “Growing Shadows” created by Myuu. Provided by Mediacharge.