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The murders that terrorized Northern California from 1968 to 1969. Lake Herman Road, Blue Rock Springs, Lake Berryessa, the taxi driver Paul Stine on Presidio Heights. The letters to the...
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The murders that terrorized Northern California from 1968 to 1969. Lake Herman Road, Blue Rock Springs, Lake Berryessa, the taxi driver Paul Stine on Presidio Heights. The letters to the San Francisco Chronicle. The 340 cipher unsolved for 51 years until three amateurs cracked it in December 2020. Arthur Leigh Allen, Gary Francis Poste, and every name investigators have circled for six decades. The one case that will not close. — a daily series with new episodes every day.
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28 AUG 2026 · In December 1968, seventeen-year-old David Faraday and sixteen-year-old Betty Lou Jensen were shot dead on Lake Herman Road near Benicia, California. No motive. No witnesses. Almost no physical evidence. What investigators couldn't know yet was that this was not a random act of violence — it was the opening move of one of the most deliberately constructed terror campaigns in American criminal history.
This first chapter of the Zodiac case traces the pattern that emerged across four crime scenes: Lake Herman Road, Blue Rock Springs, Lake Berryessa, and the murder of taxi driver Paul Stine in Presidio Heights, San Francisco. Six victims. One killer who called police to claim his crimes, mailed coded ciphers to Bay Area newspapers, and signed every letter with a crossed circle.
We examine the 408-character cipher — cracked not by the FBI but by a high school teacher and his wife using frequency analysis and intuition — and what the decoded message revealed about the psychology driving the attacks. This was not a killer hiding from what he had done. This was someone performing for an audience.
The Zodiac killed across multiple counties, exploiting the jurisdictional gaps that made coordinated investigation nearly impossible. He kept score. He made sure his work was legible. And he was never convicted.
This is where the case begins. This episode includes AI-generated content.
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Transcribed
28 AUG 2026 · Most killers avoid attention. The Zodiac Killer demanded it — and engineered exactly how it would reach the public. In this chapter of the series, we move beyond the murder sites and into the machinery the Zodiac built around them: the letters, the ciphers, and the deliberate use of the San Francisco Chronicle as his personal broadcast network.
From August 1969, the Zodiac sent twenty-two known communications — seventeen of them to the Chronicle alone. He split his first cipher across three Bay Area papers, forcing newsrooms to coordinate and effectively turning the press into his distribution network. The 408-character cipher, cracked at a kitchen table in Salinas by schoolteacher Donald Harden and his wife Bettye, revealed a message built not for confession but for performance: "I like killing people because it is so much fun."
The episode traces how each letter raised the stakes. A piece of Paul Stine's shirt, cut from the taxi driver killed in Presidio Heights, arrived in a newsroom envelope — a trophy mailed as proof of authorship. The Zodiac read the coverage, tracked what investigators said publicly, and adjusted his behavior in direct response. When profilers suggested he was too cautious to strike in a crowded urban area, his next attack came in one of San Francisco's most densely populated neighbourhoods.
And then there was the 340 cipher — sent in November 1969, unsolved for 51 years, finally cracked in December 2020 by three amateur codebreakers working independently across different countries. What it contained, and what it still doesn't tell us, remains one of the defining questions in American true crime history.
This is the Zodiac as media strategist. Cold-blooded, calculated, and still unidentified. This episode includes AI-generated content.
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Transcribed
29 AUG 2026 · For half a century, the Zodiac Killer's 340-character cipher sat unsolved — worked over by FBI analysts, Army cryptographers, and online hobbyists without a single verified break. In December 2020, three men with no institutional backing changed everything. This episode traces the full arc of the Zodiac's coded messages, from the 408 cipher that arrived in pieces at three Bay Area newspapers in August 1969 to the layered transposition puzzle that resisted every tool thrown at it for 51 years.
We begin with the 408: how the Zodiac split a single encrypted message across three newspapers, threatened a killing spree if they refused to publish, and signed it with his name for the first time. Then we meet Donald and Bettye Harden — a high school history teacher and his puzzle-sharp wife — who cracked the 408 in roughly a week using logic, patience, and a correct read on the killer's psychology. No computers. No law enforcement resources. Just a hunch about how an arrogant, theatrical man might open a message.
Then the 340 arrives, and everything changes. Harder by design, built to defeat frequency analysis, it outlasted careers and computing revolutions alike. We follow software developer David Oranchak, Belgian programmer Jarl Van Eycke, and Australian mathematician Sam Blake as they identify the cipher's hidden structure: a transposition layer using one-two decimation laid beneath the substitution cipher that had fooled everyone else. Their December 2020 breakthrough is one of the most remarkable cold-case moments in true crime history — and it still didn't give investigators a name. This episode includes AI-generated content.
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Transcribed
30 AUG 2026 · December 20, 1968. Two teenagers are shot dead on a quiet road outside Benicia, California, and the case that will consume investigators for six decades begins without anyone knowing it. This episode follows the Zodiac Killer's first year of confirmed attacks — from Lake Herman Road through Blue Rock Springs, Lake Berryessa, and the cab murder of Paul Stine in Presidio Heights — tracing not just the violence but the deliberate architecture behind it.
What makes this chapter essential is what the killer chose to do between the attacks. A phone call to Vallejo police claiming credit. Dates carved onto a car door at the water's edge. A piece of Paul Stine's bloodied shirt mailed not to law enforcement but to the San Francisco Chronicle. These weren't acts of panic. They were decisions made by someone building a public identity in real time.
The episode also examines how three separate California counties — Solano, Napa, and San Francisco — each held their own piece of the case in isolation, and how that fragmented jurisdiction gave the killer room to operate. By the time investigators understood they were looking at one perpetrator, five people were dead and the letters had already started arriving.
This is the foundation of the Zodiac case: the confirmed victims, the surviving witnesses, and the communications apparatus the killer constructed around the murders. Understanding this year means understanding every suspect, every cipher, and every dead end that follows. This episode includes AI-generated content.
AI-generated content
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31 AUG 2026 · For fifty-one years, the Zodiac Killer's 340-symbol cipher sat in the public record and said nothing. The FBI couldn't crack it. Professional cryptographers couldn't crack it. Then, in December 2020, three amateurs working across time zones solved what the world's best code-breakers could not — and what they found inside is as disturbing as anything in the case file.
This episode traces the cipher from its origins in the killing spree that began on Lake Herman Road in December 1968, through the Blue Rock Springs attack in Vallejo, the Lake Berryessa stabbings, and the murder of taxi driver Paul Stine in San Francisco's Presidio Heights neighborhood. Those murders produced the letters. The letters produced the ciphers. And the ciphers — seventeen of twenty-two known communications sent to the San Francisco Chronicle — were the killer's instrument of control.
We examine the 408 cipher first: how Donald and Bettye Harden cracked it in a week without computers, and what its triumphant, gleeful message revealed about the killer's psychology. Then we turn to the 340 — shorter than the 408 and vastly more complex. Software developer David Oranchak, mathematician Sam Blake, and Belgian programmer Jarl Van Eycke identified a layered one-two decimation transposition method buried inside the grid, a structure hidden inside a structure.
The decoded message doesn't name the killer. But it tells you precisely what kind of mind designed the whole performance: one obsessed with control, contemptuous of law enforcement, and utterly without remorse. That psychology is the through-line of everything that follows. The suspects are next. The cipher is the foundation. This episode includes AI-generated content.
AI-generated content
Transcribed
1 SEP 2026 · For more than two decades, Arthur Leigh Allen was the name investigators kept returning to. The geography fit. The timeline fit. His possessions overlapped with crime scene evidence in ways that were difficult to dismiss — a Zodiac-brand watch bearing the killer's crosshair signature, a knife consistent with the Lake Berryessa attack, wing walker boots matching prints from a confirmed crime scene, bomb-making materials found in his home. A friend reported that Allen had spoken, before the killings began, about hunting human beings and calling himself Zodiac. Polygraph examinations came back failed.
Then, in 1991, Mike Mageau — the sole survivor of the Blue Rock Springs shooting that killed Darlene Ferrin — was shown a photo lineup. Twenty-two years after the night he was shot multiple times in the face and neck, Mageau identified Allen without hesitation. It was the strongest ground investigators had ever stood on.
And then the DNA came back. Saliva extracted from stamps and envelopes on the Zodiac's letters to the San Francisco Chronicle did not match Arthur Leigh Allen's profile. He died in 1992, never charged, never tried.
This episode — the sixth chapter in the Zodiac Killer investigation — examines what the Allen case actually tells us: about the gap between circumstantial density and prosecutable proof, about what eyewitness identification can and cannot carry, and about why the non-match didn't end the conversation it should have ended. Six decades in, the case remains open. This episode includes AI-generated content.
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Transcribed
2 SEP 2026 · In 1991, Mike Mageau — the only confirmed Zodiac survivor with a direct line of sight to his attacker — sat down with a photo lineup and identified Arthur Leigh Allen. He'd been shot in the face at close range on the night of July 4, 1969, watched Darlene Ferrin die in the passenger seat, and carried that face in his memory for more than two decades. His identification was positive and unhesitating.
And yet the DNA pulled from stamps and envelopes the Zodiac himself licked and mailed to the San Francisco Chronicle didn't match Allen.
This episode follows that central contradiction through the full arc of the Allen investigation — from the 1971 tip that first brought him to law enforcement's attention, to the search of his Vallejo trailer, to the Zodiac-brand watch he wore, to the chilling pre-murder statements reported by people who knew him. Allen fit in almost every dimension investigators could measure. Then the science arrived and didn't agree.
We also return to the night of the Blue Rock Springs shooting — the waiting car, the flashlight, the phone call Vallejo police received within an hour in which a man claimed credit for both that attack and the Lake Herman Road murders. It was the Zodiac's first known act of public announcement, and it set the tone for everything that followed: letters, ciphers, threats, front-page demands.
Arthur Leigh Allen died in 1992, uncharged. The case did not die with him. This episode examines what his story reveals about the limits of evidence, the weight of eyewitness testimony, and why a case built on theatrical breadcrumbs remains stubbornly, maddeningly open. This episode includes AI-generated content.
AI-generated content
Transcribed
3 SEP 2026 · On the night of October 11, 1969, the Zodiac Killer did something he had never done before: he killed in plain sight. Paul Stine, a 29-year-old graduate student and part-time taxi driver, was shot once in the head at the corner of Washington and Cherry streets in Presidio Heights — a quiet, well-lit residential neighborhood in San Francisco. Teenagers watching from a nearby window called the police. A dispatcher broadcast the wrong description. Officers stopped a man near the Presidio minutes later and let him go. He may have been the Zodiac himself.
This episode traces the full arc of that night: the ride that ended at Washington and Cherry, the methodical crime scene cleanup, the torn shirt Stine's killer kept as proof, and the letter that arrived at the San Francisco Chronicle two days later — taunting police for the botched response and threatening to shoot children on a school bus. It was, by any measure, the Zodiac's most brazen communication.
From there, the investigation widened across three counties — Solano, Napa, and San Francisco — fragmenting evidence and leads in ways that would haunt detectives for decades. Composite sketches produced from the teenagers' descriptions became some of the most reproduced images in California crime history. And the name Arthur Leigh Allen — convicted child molester, Navy veteran, Vallejo resident — began its long dominance of the case.
The Paul Stine murder is, as far as investigators can determine, the last confirmed Zodiac killing. The letters continued. The taunts continued. The bodies stopped. This chapter asks why — and what that silence means. This episode includes AI-generated content.
AI-generated content
Transcribed
4 SEP 2026 · On September 27, 1969, the Zodiac killer walked out of a tree line at Lake Berryessa wearing a hand-stitched black hood, carrying rope and a knife, and staged the most theatrical crime in California's most baffling unsolved murder case. Bryan Hartnell survived. Cecelia Shepard did not. And the writing left on Hartnell's car door — a handwritten tally of attacks by date — transformed the scene into something closer to a manifesto than a crime.
This chapter of the investigation unpacks what Lake Berryessa reveals that no other confirmed Zodiac attack does. The killer shifted from firearms to a knife. He approached in daylight. He engaged his victims in conversation, maintained a calm and deliberate voice throughout, and then called the Napa police himself from a nearby payphone — not to confess, but to ensure the event was recorded and attributed quickly enough to make the morning papers.
Hartnell's eyewitness account remains the most detailed direct description of the Zodiac in action: a heavyset white male, around five-ten, brown hair visible at the back of the hood, a wooden-handled blade, a voice that was unhurried and controlled even as the knife came out. The forensic picture that emerges is of someone who planned the presentation as carefully as the attack itself — the costume, the symbol, the written score on the car door all authored as deliberately as the cipher letters sent to the San Francisco Chronicle.
Lake Berryessa also exposes the cross-county coordination failures that defined law enforcement's response to the Zodiac: Solano, Napa, and soon San Francisco, each running parallel investigations on a killer who understood exactly how county lines worked against them. This episode includes AI-generated content.
AI-generated content
Transcribed
5 SEP 2026 · When a serial killer names a journalist as his next target, the case changes shape entirely. In October 1970, the Zodiac mailed a Halloween card to San Francisco Chronicle crime reporter Paul Avery with a chilling message: "You are doomed." That single act crystallised something investigators had long suspected — this killer's relationship with the press was not incidental. It was structural.
This episode follows the full arc of the Zodiac's media campaign, from the simultaneous letters sent to three Bay Area newspapers in the summer of 1969, to the 17 communications directed specifically at the Chronicle, to the bloody piece of Paul Stine's shirt mailed not to police but to a newsroom. The Zodiac understood audience. He used cryptography, geography, and fragmentation to stay visible and untouchable at the same time.
At the centre of that strategy sat the 340 cipher — 340 characters of carefully constructed misdirection that defeated professional codebreakers for 51 years. In December 2020, three amateur cryptographers — David Oranchak, Sam Blake, and Jarl Van Eycke — cracked it using a complex transposition method no prior analyst had identified. The decoded message contained no name, no confession, but something almost more revealing: image management. A killer correcting the record from inside a cipher.
From the Lake Herman Road murders and Blue Rock Springs to Lake Berryessa and Presidio Heights, this episode connects the crimes to the communications — and asks what it means that the Zodiac's most carefully maintained relationship was never with investigators. It was always with the public.
The case remains open. The mind behind it is not as hidden as it wanted to be. This episode includes AI-generated content.
The murders that terrorized Northern California from 1968 to 1969. Lake Herman Road, Blue Rock Springs, Lake Berryessa, the taxi driver Paul Stine on Presidio Heights. The letters to the...
show more
The murders that terrorized Northern California from 1968 to 1969. Lake Herman Road, Blue Rock Springs, Lake Berryessa, the taxi driver Paul Stine on Presidio Heights. The letters to the San Francisco Chronicle. The 340 cipher unsolved for 51 years until three amateurs cracked it in December 2020. Arthur Leigh Allen, Gary Francis Poste, and every name investigators have circled for six decades. The one case that will not close. — a daily series with new episodes every day.
show less
Information
| Author | Yes Oui |
| Organization | YesOui |
| Categories | True Crime , History |
| Website | yesoui.ai |
| hello@yesoui.ai |
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