After being brutally attacked by the Zodiac Killer, Cecelia Shepard gives a description of her attacker that becomes the basis for the famous police sketch. SFPD Detectives Armstrong and Toschi frantically investigate suspects and ciphers in hopes of preventing another slaying. Join Carter and Wenndy as they jump back into the case and come to a terrifying conclusion. Learn more about your ad choices. Visit podcastchoices.com/adchoices