A grave marker at Tamborine Mountain Cemetery in Queensland bears the name John Vincent Damon.
For years, until he died on August 6, 2010, at the age of 69, that’s how he was known to others, including his family.
But his real name was William Leslie Arnold, and he had a secret, dark past that was unbeknownst to his wife and two adult children in Australia and three surviving stepdaughters from a previous marriage in the United States.
When he was 16 and living in Nebraska in the 1950s, he fatally shot his parents during what was later described as a fight over the use of the family car. He then buried them in the backyard of their home. It took about two weeks before the crime was discovered, authorities said.
Arnold pleaded guilty in 1959 to murdering his parents. He was sentenced to life in the Nebraska State Penitentiary. During his time there, he was described by authorities as a “model prisoner”, but on July 14, 1967, he and another inmate escaped.
The other inmate was soon recaptured, but authorities couldn’t find Arnold for years, and the case eventually went cold. Over the past couple of years, however, investigators with the US Marshals Service were able to gather evidence that eventually led them to crack the case through DNA testing.
The discovery came as a shock to his surviving family members, who authorities said were oblivious to Arnold’s past. To them, he was John Damon, a father and husband. To US authorities, he was a convicted killer and escaped inmate.
Surviving family members in Australia and stepdaughters of Arnold in the US declined to comment.
Matt Westover, the US Marshals Service deputy who cracked the case, said in an interview that connecting Arnold to Damon took several years and involved sifting through thousands of pages of documents and investigating several leads across the US, as well as in Brazil and Canada.
Several law enforcement agencies over the years had tried to piece together what had happened to Arnold after he escaped. The FBI investigated the case into the 1990s, then it was turned over to the Nebraska Department of Correctional Services. Ultimately, it was passed on to the US Marshals and assigned to Westover in August 2020.
“I was obsessed with the case,” Westover said.
He reached out to Geoff Britton, who had worked on the case from 2004-13 when he was with the Nebraska Department of Correctional Services.
This criminal over a number of years in picsBritton, who is now chief of the Office of Law Enforcement Support in California, said that even after he left Nebraska, he continued to look into the case “as a hobby”. Britton said he and Westover talked frequently about it over the past few years.
“I spent a lot of nights just reading because I was just amazed at all the different information, and just trying to find something, some kind of lead,” Westover said.
There were plenty of false leads.
One theory about Arnold’s whereabouts was that he had fled to Brazil. That was based on an immigration document with his name on it issued to someone in Brazil less than two years after the prison escape. But Westover said Brazilian officials didn’t have any record of Arnold, and it was unclear why his name was on that document.
Westover tracked down an ex-girlfriend of Arnold, which led to a trove of letters he had written to her and her family from prison.
Westover also found a postcard from Canada and one from California with Arnold’s name. Those leads proved fruitless.
In a “wanted” poster for Arnold, the US Marshals Service said he was “very musically talented and most likely used these skills to financially survive”. That detail also failed to yield any leads.
“It just seemed like everything was working against us,” Westover said.
Over time, various leads led investigators to determine that after Arnold’s prison escape, he fled to Chicago, where he started going by his new name, Damon, and quickly met and married a woman with children.
He then began to move around, living in Cincinnati and Miami, according to the Omaha World-Herald, which has chronicled Arnold’s life through a series of articles and a podcast. Later, he divorced his wife and moved to California, where he remarried and had children, eventually settling down in Australia.
‘It was thrilling. I won’t say it’s like hitting the lottery … but I was just ecstatic.’
Matt Westover, US Marshals Service
Finally, in November 2020, Westover tracked down Arnold’s brother in Missouri. He agreed to provide a DNA sample. Later, in August 2022, Westover connected with a man from Australia who was trying to learn about his late father, Damon, who had told him he was an orphan from Chicago.
DNA samples from Arnold’s brother and Damon’s son indicated a match and proved that Damon was really Arnold.
“It was thrilling,” Westover said. “I won’t say it’s like hitting the lottery because I’ve never hit the lottery – I’m sure that’s a pretty good feeling – but I was just ecstatic.”
Then came the hard part: Westover had to break the news to the man from Australia that the father he knew as Damon was actually an escaped convict who had killed his parents. Westover said he told the man over a video call.
“That was a really hard conversation,” he said. “Their family didn’t know any of this stuff, so it’s hard not to feel bad for them.”
Britton has also spoken to Arnold’s family in Australia, trying to help answer questions about his past that they knew nothing about.
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“They’re getting a new perspective on a man they had a completely different view of,” Britton said. “That’s got to be hard to process.”
In getting to know the Damon family, Westover said he learnt that Arnold had gone on to become a businessman and ended up living a “great life, and [he] apparently changed his ways”.
“He was a great father to them,” Westover said.
In March, he and other investigators came to Australia to wrap up the case. While here, they visited the grave of John Vincent Damon.
“I’m glad he’s dead,” Westover said, explaining that if he were still alive, he would be facing arrest in his eighties.
“As bad as that sounds, I’m glad because I really wouldn’t want to put the family through that,” Westover said. “I think they had been through enough already, let alone if I was to take their dad from them.”
