A few months ago, a media alert landed in my inbox. It was from NSW Police, announcing a $1 million reward for information relating to the disappearance of a woman named Marion Barter almost 30 years ago.

The size of the reward stopped me in my tracks. And it got me thinking: why so much money? Why now? And, do these kinds of rewards ever actually work?

So I started digging. And the more I learned, the more I realised the story was even bigger than one missing woman.

Here's what I found.

In June 1997, a 51-year-old schoolteacher had a roast lamb dinner with her family before heading off to Europe on what she called the “trip of a lifetime”. That was the last time they saw her.

Investigators believe Marion left Australia under a name she'd legally changed just a month before her departure. Her bank account was drained of $80,000 shortly after. When Marion’s daughter Sally went to police to report her missing, the case was dismissed within 24 hours.

"It said on the police file," Sally told me, "'no further action due to other work priorities.'"

But that would not be the end of the story. Over the coming decades, Sally campaigned to find what happened to Marion through official and unofficial channels.

The case attracted significant interest over the years. A podcast series called “The Lady Vanishes” based on Marion has accumulated over 22 million listens worldwide.

Through it all, Sally kept the focus firmly on her mother’s case.

Every day in Australia, 150 people are reported missing. Most are found quickly. But around 2,700 are currently classified as “long-term missing”, which means they’ve been gone for more than three months.

People in the missing persons community describe experiencing something called "ambiguous loss." Not grief, exactly. Just an endless, unresolved not-knowing.

The resources dedicated to solving those cases are strikingly limited. A NSW parliamentary inquiry into unsolved crimes has heard that the state’s police have 753 unsolved matters, and just 38 staff in the Unsolved Homicide Unit.

Sally felt that gap acutely. She fought for every inch of progress over nearly three decades. She contacted the AFP. She lobbied detectives. She drove a coronial inquest. She walked into the NSW Attorney General's office with a folder of evidence and asked for help.

In the end, it was a podcast listener who first connected the critical dots, finding a 1994 personal ad that linked a man named Rick Blum to Marion's disappearance. Investigators now believe Blum had a secret relationship with Marion. The coroner found he had deliberately withheld information from the court, but he has never been charged.

In February 2024, NSW Coroner Teresa O'Sullivan ruled Marion almost certainly died on or around 15 October 1997. When Sally went back to the police expecting action, here's what she heard.

"They said to me, 'The case is open but inactive,'" she told me. "'We've got 800 cases, Sally, and we need to prioritise.' That was a real gut punch."

But Sally kept pushing. She called a meeting with the head of Marion's case at the Unsolved Homicide Unit, made a direct request for a reward increase, and was told to write to NSW Police Minister Yasmin Catley.

A few months later, the reward for information about Marion Barter's disappearance was increased to $1 million.

NSW Police currently have 42 active $1 million rewards on offer across the state. Marion is one of them. The question of whether they actually work is more complicated than it sounds.

Take the case of Cleo Smith. In 2021, the four-year-old disappeared during a family camping trip in WA. Six days later, a $1 million reward was announced. It generated enormous public attention. Eighteen days after she vanished, Cleo was found alive in a locked house in Carnarvon.

But when it was over, police were clear: the reward money was not expected to be claimed. The case was solved through forensic work and surveillance, not a public tip. So did the reward “work”?

I put that question to Dr Xanthe Weston, a criminologist who has worked on some of Australia's most high-profile cold cases. Her answer was direct.

"Whether the reward is claimed or not, to me, isn't the mark of success," she told TDA. "To me, the reward has already worked simply because conversations are happening around it."

Dr Weston says the timing of a reward is never accidental. “Smaller rewards will be offered, then increased maybe years or decades later, normally because they've received some sort of tip-off, or believe it's a good time to increase that reward.”

Sally is clear-eyed about the dual purpose of the announcement. She said: "It's a bit of a carrot dangle to say, 'Here's a million dollars if you tell us what you know".

"But it also helps bring awareness. Without that, new people aren't hearing the story."

Since the press conference, Marion's Facebook page has seen a 4,000% increase in engagement. Sally says two major leads have also come in.

The road to this point has been incomprehensibly hard. Three and a half years after Marion disappeared, Sally lost her brother to suicide. Marion's parents went to their graves not knowing the truth about what happened to their daughter.

For years, the official police position – that Marion had simply chosen to disappear – shaped how the people around Sally responded and how the case was treated.

Dr Weston has a name for what Sally has been doing for three decades. She calls it being a “white knight.”

“Most of the cold cases that are solved are ones that have a champion,” she told me. “A family member or a member of the media pushing a case, keeping it front and centre for police.”

Sally has been pushing for more than 10,000 days. She calls the million dollar reward appeal her “last chance”.

"This is my last bite at the cherry. I don't know that there's much else I can do. I've done podcasts. I've been to an inquest. What else do I have? I have the public."

To anyone sitting on something – a detail, a memory, or something that never quite made sense – Sally's message is this: "You may have carried this information for years. You may have convinced yourself it's too late. But it does matter. It always has. Time does not erase responsibility."

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