California 1968-9 Zodiac Killer:

The Man Who Mocked America and Was Never Caught
Killers tend to run.
They cover their tracks and destroy the evidence, slip into the background noise of normal life and pray nobody ever connects the dots back to them.
The Zodiac Killer did the opposite.
He wanted to be seen. Not caught, but known. He wanted to be whispered in fear all over California. He wanted the headlines in the papers. He wanted to shame the police. He wanted America to know that a killer was walking the streets somewhere, free to do whatever he pleased and there was nothing anyone could do about it.
Decades. And he got precisely what he wanted.

The Killings Start
1968. Northern California. It was the kind of place where couples parked on quiet roads at night, taxi drivers worked late shifts through foggy streets in San Francisco and ordinary life happened at a comfortable, unsuspecting pace.
That all blew up with the Zodiac Killer.
Between 1968 and 1969, this unknown predator killed at least five known victims. He picked on couples parked in cars, vulnerable and caught unawares. There he shot a taxi driver dead in the middle of a San Francisco street. His attacks were not random explosions of violence. They were calculated, precise, deliberate. He picked his victims with care. He plotted his escapes methodically. His attacks were scattered across the city from one place to another, he attacked at different times, with various MOs, and investigators had no idea where he would strike next.
All it was intentional.
But the murders were only part of what made the Zodiac Killer one of the most infamous serial killers in American history.

The Correspondence
Not long after the murders began, letters started arriving at newspaper offices in the San Francisco Bay Area.
San Francisco Chronicle. The San Francisco Examiner. The Vallejo Times-Herald.
The letters looked like nothing law enforcement had ever seen before. The killer was not hiding. He was working. He confessed to his crimes, taunted police for failing to catch him, and issued chilling threats of more violence if his letters were not published on the front page.
He marked every letter with the same sign – a circle with a cross inside it, like the cross-hairs of a rifle sight. It was his label. His sign. A symbol that would become one of the most recognizable in the history of true crime.
He referred to himself as the Zodiac.
And then he made matters worse.

The Codebreakers
In several of his letters he hid coded messages – strange, elaborate ciphers, full of symbols and characters that no ordinary person could read.
If these codes were broken, the Zodiac said, it would reveal his true identity. It was a challenge” A game. A way to show the world he was smarter than all the people trying to catch him.
Professional cryptographers and amateur code-breakers alike turned themselves to the problem. One cipher took a high school teacher a week to crack, and what it revealed was horrifying. The decrypted message was about the pleasure he got out of killing, how it was more exciting than hunting animals in the woods.
But one cipher – known as Z340 because of its 340 characters – resisted all attempts to break it for 51 long years.
It wasn’t until December 2020 that a team of amateur code-breakers cracked Z340. Inside they found chilling things, not a name, not a place, but mocking, ironic statements about how much fun he is having. Even in defeat, the Zodiac managed to taunt his pursuers across the decades.

The Inquiry
The San Francisco Police Department devoted unbelievable resources to trying to catch the Zodiac Killer. Detectives from many jurisdictions worked on the case for years. They looked at hundreds of suspects, questioned them and ruled them out.
One name kept coming to the top.
Arthur Lee Allen, a convicted sex offender from Vallejo, became the prime suspect in the minds of many of the detectives who worked the case. The circumstantial evidence against him was phenomenal. His handwriting was like the Zodiac letters. His size shoe matched prints left at one of the crime scenes. Most disturbingly, he owned a Zodiac brand watch too, the same brand the killer had mentioned in one of his letters.
But in 2002, DNA testing dealt a blow to that theory. The DNA from the letters did not match Arthur Lee Allen. He was officially ruled out after years of speculation.
The investigation was right back to square one.

Silence
The letters stopped coming in 1974.
Enough jokes. No more coding. No more cross-hairs on envelopes delivered to newspaper offices. The Zodiac Killer has just stopped — and has not spoken since.
No one knows why.
Did he pass away? Did he move away and start a new life somewhere far off of California? Had he grown tired of the game he had been playing? Did he fade away softly into old age, taking his secret to the grave?
The answer is, of course, unknown here as in all the rest.

The Legacy
The known victim count for the Zodiac Killer is five. But in his own letters, he claimed as many as 37 murders — a number that has never been proven, but also never been completely dismissed.
The case was never officially closed.
Somewhere in California, or maybe somewhere else entirely, the man behind at least five brutal murders spent his remaining days without ever facing justice. He walked freely through the world, perhaps among people who knew nothing of what he had done, what he had written, what he had enjoyed.
He is one of the most studied figures in American criminal history, but his identity is still one of law enforcement’s greatest unsolved mysteries.
The Zodiac Killer wanted to be remembered.
At any rate he succeeded in this.

Zodiac Killer · Norcal · 1968-1969
Confirmed victims: 5 Suspected victims: 37
Prime suspect: Arthur Lee Allen · DNA 2002 Excluded Z340 cipher cracked Dec 2020 · Unknown identity.

If you want to read more like this, click here: 1975. State of Michigan