Zodiac Killer remains unidentified despite ongoing investigations

The Zodiac Killer is one of America's most mysterious and notorious serial killers. He is linked to at least five murders that took place in Northern California between 1968 and 1969. This killer gained a reputation for taunting police and the media, leaving behind chilling letters and cryptic messages. The Zodiac first made headlines in December 1968 when he murdered a teenage couple in a parked car. The following year, he attacked another couple, but one of the victims survived. He struck again in September 1969, stabbing a couple at Lake Berryessa, where the male victim also survived. His last confirmed victim was a taxi driver killed in October 1969. What makes the Zodiac unique among serial killers is his need for attention. He sent letters to newspapers, claiming responsibility for his crimes. One letter, containing a famous cipher, stated, "I like killing people because it is so much fun." This message shocked the public and sparked intense interest in the case. The Zodiac sent several letters between 1969 and 1974, including cryptograms. While some ciphers have been decoded, such as the "408 cipher," others, like the "340 cipher," remained unsolved for many years, only to be cracked in 2020. Despite these clues, law enforcement has never identified the Zodiac Killer, and he claimed to have killed 37 people. Various suspects have emerged over the years, with one of the most cited being Arthur Leigh Allen. However, no concrete evidence ever linked him to the crimes before his death in 1992. The investigation into the Zodiac Killer was officially reopened in 2007, and it remains active today with hopes of using advanced forensic technology to uncover the killer's identity. For now, the Zodiac Killer continues to be a figure of fascination, inspiring books, films, and ongoing discussions among true crime fans. His chilling letters and unresolved case still haunt investigators and the public alike.