
The Missing Matter
Just when you thought the story was over, the questions only deepen. In The Missing Matter: The Next Chapter in the Search for Marion Barter, Sally Leydon and investigative partner Joni Condos team up to reopen the 1997 disappearance of award-winning teacher Marion Barter. Across a global retracing of Marion’s final steps, never-before-heard evidence and interviews with key insiders shed fresh light on cash-trail anomalies, legal briefs, and unanswered questions.
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Show overview
The Missing Matter launched in 2025 and has put out 64 episodes, alongside 8 trailers or bonus episodes in the time since. That works out to roughly 45 hours of audio in total. Releases follow a weekly cadence, with the show now in its 3rd season.
Episodes typically run thirty-five to sixty minutes — most land between 30 min and 56 min — though episode length varies meaningfully from one episode to the next. None of the episodes are flagged explicit by the publisher. It is catalogued as a EN-US-language True Crime show.
The show is actively publishing — the most recent episode landed 2 days ago, with 29 episodes already out so far this year. Published by [email protected].
From the publisher
For more than 25 years, Sally Leydon has been waiting for answers about her missing mum, Marion Barter. In Season 2, Sal steps beyond her own story to speak with other families enduring the same unthinkable reality—the ambiguous loss of a loved one who has vanished without explanation. These are raw, intimate conversations about hope that refuses to die, grief that never finds closure, and the strength it takes to live in the in-between. If you know someone who is dealing with a missing person, and would like to share your story, contact Sally at [email protected]
Latest Episodes
View all 64 episodesEp 3 - Meet Bear - The Unlikely Hero
Ep 2 - Arthur Brown - Person Of Interest
Ep 1 - Has anyone seen my daughter?
What happened to... Joanne & Kirste
$500K Reward For Information
After all these years...Lily's brother opens up
Did a rapist kill my mum?
Ep 3 -You know I killed Mum don't you?
Katie Vanishes
What Happened to ...Kathleen O'Shea
Ep 4 -I'm not chasing the psychics, the psychics are coming to me
Those Left Behind
Ep 2 -How Did Zac Disappear Without A Trace?
Who is Zac
Introducing -What Happened to Zac?
$1 Million Dollar Reward
One Last Catch-Up with Joni
Signs, Searches and the Missing Who Still Matter

Help Find Yvonne - Bonus episode
bonusIn this urgent bonus episode of The Missing Matter, Sally shares the story of Yvonne Whear , a 73-year-old woman who disappeared from her rural New South Wales property in February 2026 without explanation. As her family searches for answers, the episode explores the final known movements in Yvonne’s case, the growing concerns around missing persons investigations in the Northern Rivers, and the haunting question of what may still lie hidden in local waterways. Joined by Kim Marshall, Sally unpacks the reality families face when a loved one vanishes and why awareness, action, and truth matter more than ever.See omnystudio.com/listener for privacy information.

S3 Ep 8The Power of the Podcast with Hedley Thomas
Hedley Thomas started his career as a copy boy at 17 and spent four decades chasing some of the world's biggest stories, from the fall of the Berlin Wall to the Hong Kong handover, before finding his most powerful tool yet: the podcast. In this episode of The Missing Matter, Sally sits down with the award-winning investigative journalist and creator of The Teacher's Pet to explore how long-form audio storytelling has reshaped the fight for justice in cold cases and missing persons investigations. From reporting on the Dawson case in a Brisbane newspaper library in 2001 to producing a podcast that helped send Chris Dawson to prison, Hedley explains how the freedom of podcasting allows him to go where traditional media can't, unpacking briefs of evidence, finding new witnesses, and keeping cases alive long after the system has moved on. With more than a hundred million downloads and investigations that have driven real-world change, Hedley reflects on what keeps him going, why he believes the criminal justice system has failed victims, and why the missing still matter even when the guilty think they've gotten away with it. See omnystudio.com/listener for privacy information.