The Beaumont Children Were Last Seen with a Mysterious Man — Then They Vanished Without a Trace in One of Australia’s Most Haunting Cold Cases

The missing Beaumont children.

The case of the missing Beaumont children remains unsolved and endures as one of Australia’s most complex mysteries.

Jane, Arnna and Grant Beaumont vanished from Glenelg Beach in Australia in January 1966 after being spotted with an unknown man. Their parents, Grant (known as Jim) and Nancy Beaumont, sounded the alarm that evening when the three siblings didn’t return home as expected and a search began — one that hasn’t ended.

Over 60 years later, lengthy investigations, detailed eyewitness accounts and extensive digs haven’t yielded more information. At the same time, their disappearances sparked fear in the local community and, in turn, helped raise awareness for children’s safety and increased parents’ vigilance.

Despite the lack of answers, Jim and Nancy remained optimistic, holding out hope for their kids’ eventual discovery.

“We’ve just got to wait and hope and pray,” he told local media nine months after the children were last seen. “I don’t believe that the children are dead, and I’ll cling on to the hope until there’s any evidence found otherwise.”

So what happened to the Beaumont children? Here’s everything to know about the events leading up to their disappearance and what clues have emerged over the years.

Who were the Beaumont children?

‘Massive Hunt Fails to Find Trace of Children,’ relating to the missing Beaumont children case.

The Beaumont siblings captured national attention in Australia after their disappearance in 1966.

Jane, 9, Arnna, 7 and Grant, 4, were born to parents Jim and Nancy. The family resided in Somerton Park, Adelaide, Australia, during the 1960s.

On the morning of Australia Day, Jan. 26, 1966, the children left their home unsupervised to visit Glenelg Beach, a 2-mile journey down the road, according to the Australian Broadcasting Corporation.

Jim and Nancy expected them to return home by 2 p.m., but the kids were never seen or heard from again.

What happened on the day the Beaumont children disappeared?

Aerial view of Glenelg, South Australia.

Between 9:45 a.m. and 10 a.m. on the morning of Jan. 26, 1996, the three siblings left their home in Somerton Park and walked to a nearby bus stop to catch the bus to Glenelg Beach. They never returned home, and their parents reported them missing, resulting in a police search that began at 7 p.m. that night.

According to a 2025 9 News Australia documentary, the bus driver told police that he remembered the kids getting on, and a short time later, the neighborhood postman saw them as well.

The next time they were spotted was at a grassy area near Glenelg Beach, where one of Jane’s classmates recognized her and pointed her out to her mother. The mother and daughter told police that they had seen the three Beaumont children interacting with a man. The kids were later seen by other witnesses leaving with the man, whom several described as being tan, thin-faced, with short blonde hair.

The last time they were ever spotted was at a bakery in Glenelg. The shopkeeper told police that the Beaumont children came into the bakery somewhere between 11:15 and 11:30 that morning, and purchased food with a £1 note, according to a 1967 news story about the case.

At the time, detectives told the media that this was “the most significant clue” in the case. Jim and Nancy reported that they had only given their daughters and son 6 shillings and a sixpence to spend that day, and detectives believed that someone — likely the unidentified man — had given them the £1 bill.

The Beaumont children left the bakery and were never spotted again. They were expected home by 2 p.m., but when they didn’t arrive, their parents called the police and reported them missing later that evening. Per the Australian Broadcasting Corporation, a police log notes that the search for the Beaumont children began around 7 p.m. on the night of Jan. 26.

What happened during the investigation into the Beaumont children’s case?

Dutch psychic Gerard Croiset after being brought in to assist with the search for the three missing Beaumont children on November 14, 1966 in Adelaide, Australia.

After the Beaumont children disappeared and their parents reported them missing, police began conducting their search at 7:20 p.m.

They scanned the entire coastline, as well as nearby boats and the water. Hundreds of volunteers helped the police in what was the “largest scale search in South Australia’s history,” per the Australian Broadcasting Corporation.

While the physical search revealed no evidence of leads, a psychic, Gerard Croiset, was brought in from the Netherlands to assist in the case, hired by a local businessman.

That August, The Canberra Times newspaper reported that Croiset believed the children were buried in a cave near an Adelaide beach. But in November of that year, Croised claimed that they were buried underneath a newly constructed Somerton Park factory. The site was eventually excavated, per the Australian Broadcasting Corporation, but nothing was found.

In 1968, two letters were sent to Jim and Nancy, supposedly written by their daughter Jane. One letter requested that the parents meet to pick up the kids, but when they arrived, no one showed up. While it was initially claimed that the letter was legitimate, it was later confirmed to be a cruel hoax.

The investigation into the Beaumont children continued for years, but no physical evidence was found. However, at the time, multiple suspects were named in the inquiry, though none were charged. The state government and police also offered a $1 million reward for anyone with information leading to their discovery.

What theories have emerged about the Beaumont children’s case?

‘Three vanish: Vast hunt at beach,’ in relation to the disappearance of Beaumont children.

Over the decades since the Beaumont children disappeared, several theories have come to light.

While some believe the children drowned or that there was the involvement of a religious cult, the most prevalent theory is that the children were abducted by the man they were spotted with on the beach.

Throughout the years of investigation, hundreds of suspects were examined closely, according to the 9 News Australia documentary on the case. However, authorities focused heavily on two particular suspects: Bevan Spencer von Einem and Arthur Stanley Brown.

Von Einem, 20 years old at the time of the kidnapping, was suspected because of a trial for another case. Although police investigated the lead, nothing was uncovered. Meanwhile, Brown was 54 at the time of the Beaumonts’ disappearance, and was linked to numerous other murder cases.

For decades, police had no strong leads until Haydn Phipps, the son of a wealthy industrialist named Harry Phipps, came forward with new information.

Haydn told investigators that when he was 15 years old, he allegedly saw the Beaumont children with his father in his family backyard in Glenelg, according to the Australian Broadcasting Company. He claimed that his father loaded up the car soon after and drove off, per a 2013 news story, and that his father owned the local Castalloy factory, where he had a cottage on the premises.

Nine years later, two brothers named Robin and David Harkin came forward and told police that just three days after the Beaumont children disappeared, Phipps paid them to dig a “grave-sized” hole on the site of the Castalloy factory, The Times reported. The men, who were children at the time, led investigators to the area where they believed they had dug the hole.

After the revelation of this new evidence, multiple searches were conducted on the factory site in 2013, 2018 and 2025, but no evidence was found.

What are the latest developments in the Beaumont siblings’ disappearance?

Authorities conducting a search site for the Beaumont children.

In the past decade, three searches have been conducted at the old Castalloy factory site in North Plympton, Australia, where investigators thought the children may be buried.

The first search in November 2013 used ground-penetrating radar, which detected anomalies in the ground and could have indicated the presence of objects in the soil. Investigators dug up the area, but found nothing unusual at the site. In January 2018, another search was conducted at the Castalloy factory, but nothing was found aside from animal bones.

In February 2025, the case of the Beaumont children was thrust back into the public eye with a new search of the factory. An anonymous donation of $10,000 was made to help excavate the Castalloy factory site once again, which was slated to be converted into a housing development, 9 News Australia reported.

During the week-long search, investigators turned over 10,000 tons of soil and came up empty-handed. “I think we can walk away satisfied we’re not going to find the remains here,” lead private investigator Frank Pangallo said afterward, per the outlet.

To this day, no one has ever been arrested or charged in the case of the Beaumont siblings. While the case remains unsolved, investigators continue their search for answers.

“A lot of crimes are solved when the public comes forward with the new information,” Pangallo told 9 News Australia in March 2025. “What [this search] has generated is enormous interest in this incredible case, this cold case, more information has come forward that we now need to sift through.”

Where are the parents of the Beaumont children now?

Nancy Beaumont, mother of the three missing Beaumont children.

The public investigations into their children’s disappearance caused Jim and Nancy to stay away from the spotlight.

However, they never stopped the search for their missing children. It was at Nancy’s request that a second search of the Castalloy factory was conducted in 2018, per The Guardian.

The couple had no other children together, and divorced later in life.

Nancy, 92, died in an Adelaide nursing home in 2019. Jim, at 97, died in 2023 in Adelaide, according to The Times.