Was the Zodiac Killer ever caught and how many people did he kill?

Netflix has today released a three-part series delving into the story of the Zodiac Killer who claimed to have murdered 37 people in Northern California in the 1960s.

Although the serial killer claimed to have murdered more people, he has only been conclusively linked to five murders and a wider seven assaults.

The self-named Zodiac Killer has never been caught or identified.

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Netflix’s new series This is the Zodiac Speaking contains eye-opening testimonies about the prime suspect in the Zodiac case.

Arthur Leigh Allen, who died in 1992, was the only named suspect relating to the Zodiac murders but was never conclusively linked to any of the victim's deaths.

The Zodiac Killer taunted police and made threats through letters sent to newspapers between 1969 and 1974 until they abruptly stopped.

In 1969, The Zodiac Killer sent letters to three separate news publications and wrote: “Dear Editor: I am the killer of the two teenagers last Christmas at Lake Herman,” and he included details that only the murderer could have known.

He went on to threaten the publications with further attacks if they didn’t publish his letters on their front pages. Many of his letters began with the phrase: “This is the Zodiac speaking,” which inspired the title of Netflix’s new Zodiac Killer documentary.

In one letter he wrote: “I like killing people because it is so fun,” and he included complex cipher puzzles which he claimed were key to identifying him.

People have been trying to crack his codes in the years since he went quiet.

The mystery and lack of definitive answers has been the inspiration for books and movies including