(Warning, Content May Not Be Suitable For Young Children) The Beaumont children, Jane, Arnna, and Grant, vanished from Glenelg Beach in Adelaide, Australia, on January 26, 1966. Their disappearance remains one of Australia's most enduring cold cases, sparking a massive police investigation that has yet to yield a definitive answer. Witnesses reported seeing the children with a tall, blond man, who is considered a prime suspect. Despite numerous leads and theories, including abduction, accidental drowning, and a letter claiming the children were on vacation, the mystery persists. The case has had a profound impact on Australia, raising awareness of child safety and prompting tighter parental supervision. Though hope of solving the case fades, the memory of the Beaumont children continues to resonate with Australians.