In this episode, we take a step back and examine the chilling evidence left behind by the Zodiac Killer. From his choice of victims and weaponry to the taunting letters and unsolved ciphers, we explore the clues that continue to fascinate and terrify the public. What kind of killer was the Zodiac? Was he motivated by thrill, control, or a deeper, twisted satisfaction? With insights from criminologists and profilers, we piece together what we know about the man behind the cryptic messages and chilling murders, and we ask: was the Zodiac truly an enigma beyond capture, or did he leave behind the clues that could still unmask him?

In Episode 20, we dive into two of the most compelling suspects in the Zodiac case: Lawrence Kane and Gary Francis Poste. Both men have eerie connections to the Zodiac's timeline, unsettling pasts, and behavior that seemed to match the killer's profile. Harvey Hines spent years investigating Kane, linking him to multiple victims, including the disappearance of Donna Lass. Decades later, the Case Breakers turned their attention to Poste, a seemingly mild-mannered man whose dark past hid possible ties to Zodiac crimes. Join us as we unravel the evidence, sift through the theories, and try to determine if either of these men was truly the Zodiac Killer.

In Episode 22, we explore the making of David Fincher's "Zodiac," the 2007 movie that brought the infamous Zodiac case to life on the big screen. Delving into the dedication of screenwriter James Vanderbilt and the meticulous direction of David Fincher, this episode highlights the challenges of transforming a true crime saga into a compelling film while staying true to the victims and those who pursued the killer. Join us as we examine how the filmmakers recreated pivotal moments, interviewed key witnesses, and grappled with presenting a prime suspect, all in an effort to tell one of America's most chilling unsolved mysteries.

As California was gripped by fear following two brutal attacks, the Zodiac Killer raised the stakes with an unprecedented move. In July 1969, he sent cryptic letters to local newspapers, taunting the public and police with a chilling puzzle. Within each envelope lay a cipher, claiming to reveal his identity to anyone able to crack the code. In this episode, we uncover the contents of these infamous letters, the public’s reaction, and the determined efforts of two citizens who dared to unravel the Zodiac’s twisted message. Enter the mind of a killer who thrived on fear, secrecy, and a deadly game.

In Episode 17, we turn our attention to Richard Gaikowski, another compelling suspect in the Zodiac Killer case. In the 1980s, anonymous letters and an eerie voice led law enforcement to this quiet journalist with a mysterious past. Was he truly connected to the Zodiac’s brutal spree, or was this another case of misplaced suspicion? From his involvement in the underground press to the accusations that continued for years, Gaikowski’s story is filled with puzzling clues, coincidences, and relentless accusations. Join us as we examine the evidence, listen to the voices, and try to determine if Richard Gaikowski was the shadowy figure that terrorized California.

In 1966, the brutal murder of Cheri Jo Bates left Riverside, California in shock. A year later, a series of handwritten letters added confusion and fear to an already tragic case. In this bonus episode, we explore the story behind these hoax letters—revealed decades later to be the work of a misguided teenager seeking attention. Discover how this revelation impacted the investigation, as DNA analysis led to a surprising confession. We untangle the web of false leads and mischief that clouded Cheri Jo's case, ultimately narrowing the focus back on finding justice for this young woman.

In this episode, we continue our journey into the chilling events at Lake Berryessa. On September 27, 1969, Bryan Hartnell and Cecelia Shepard were enjoying a peaceful afternoon when they were approached by a hooded figure—the Zodiac Killer. This time, he attacked in broad daylight, changing his modus operandi and bringing a new level of brutality. Against all odds, Bryan Hartnell survived and shared his harrowing account of the assault. Join us as we explore Bryan's perspective and the details he provided that offered a rare glimpse into the Zodiac's terrifying methods.

In 1966, the peaceful city of Riverside, California, was rocked by the brutal murder of 18-year-old Cheri Jo Bates. Her death remained a baffling cold case until years later when Paul Avery of the San Francisco Chronicle received an anonymous tip that the Zodiac Killer may have been involved. In this episode, we explore the haunting details of Cheri Jo’s life, her tragic death, and the series of letters that seemed to tie her fate to the infamous Zodiac. Join us as we investigate whether the Zodiac was truly responsible or if another mystery lurks behind her untimely demise.