TAPT Podcasts
Motive & Method
Motive & Method is an expert-led Australian true crime podcast. Join Dr Xanthe Mallett and criminal psychologist Tim Watson-Munro as they unpack what really makes the offenders behind some of history’s most notorious cases tick, and also react and unpack crimes as they hit the headlines. You will also hear from victim survivors, investigators and advocates for change analysing motive, and method.
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TAPT Podcasts
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Podcast website
Latest episode
Jul 9, 2026
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Episodes
6. The Mysterious Disappearance of Marion Barter 09.07.2026 30:23
She secretly changed her name. Hundreds of thousands of dollars disappeared from her bank account. A convicted conman was questioned for days at a coronial inquest, yet nearly three decades later, no one knows what happened to Marion Barter. In this episode, Tim & Xanthe are joined by Marion’s daughter Sally Leydon. She reveals the extraordinary twists in her mother’s disappearance...
Chopper Read: Australia’s ‘Celebrity’ Criminal 07.07.2026 29:28
How a notorious criminal became a pop culture legend. Tim & Xanthe unpack the violent life and complicated mythology of Mark Brandon ‘Chopper’ Read - the underworld figure immortalised in film, television, and true crime folklore. From prison violence and gangland crime to media fame and the cult success of 'Chopper', we examine how a brutal criminal transformed himself into...
A Family Vanished: The 'Nannup Cult' Mystery 30.06.2026 41:08
In 2007, four people vanished from a remote town in Western Australia - leaving behind an abandoned home, a cryptic note and a trail of unanswered questions. At the centre of the mystery was a self-styled spiritual leader, who had built an online doomsday cult. Over the past 20 years, as desperate family, police and coroners examined theories ranging from suicide pacts to staged disappearances, th...
Bonus: Behind The Scenes With MP Jeremy Buckingham 26.06.2026 30:21
In this bonus episode, Tim and Xanthe sit down with MP Jeremy Buckingham, the driving force behind the parliamentary inquiry examining some of Australia’s most notorious unsolved murders and missing persons cases. Buckingham reveals what sparked his decade-long push for answers, the systemic failures families say have left them abandoned and why he believes these cases deserve fresh sc...
5. Cheryl Grimmer: A Confession Ignored- A Child Killer Never Caught 23.06.2026 29:09
A three-year-old disappears. A teenager confesses. Yet more than five decades later, Cheryl Grimmer’s family is still fighting for justice. Cheryl Grimmer vanished from a beach change room in 1970, and despite a detailed confession decades later, no one has ever been held accountable for her murder. In this powerful interview, Cheryl’s brothers, Paul Grimmer and Ricki Nash, share the d...
4. Keren Rowland: Was She Ivan Milat's First Victim? 16.06.2026 32:42
What if Ivan Milat’s first victim was killed more than two decades before the backpacker murders? Keren Rowland was 5 months pregnant when she was brutally murdered and hidden in a pine forest in 1971. In this episode, Tim & Xanthe sit down with Keren's brother Steve Rowland and former UK detective Hugh Hughes. They detail years of fighting for answers, alleging police ignored crucial le...
3. Kevin Docherty: 47 Years Searching For Answers 11.06.2026 27:13
A twin brother's 47-year fight for answers, suspicious letters and a new witness who may hold the key to where Kay Docherty is buried. In this episode, Kevin Docherty shares the heartbreaking story of his sister Kay Docherty, who vanished alongside her friend Toni Cavanagh in 1979. Nearly five decades on, Kevin recalls the night they disappeared, the suspicious letters sent to their families days...
2. Ivan Milat's 11 Other Victims? 11.06.2026 22:11
Families demand answers - police under scrutiny - and a revelation that could reshape the Milat case. At the first hearing into dozens of Australia’s unsolved murders and missing persons cases, police revealed a previously unheard list of potential additional victims linked to Ivan Milat. In this episode, forensic scientist and criminologist Dr Xanthe Weston and criminal psychologist Tim Wat...
1. Australia's Killer Secrets: Milat, Murders & Missing 10.06.2026 28:45
What if the full story behind Australia's most notorious serial killer Ivan Milat has never been told? In episode one of this special series of Motive&Method, forensic scientist Dr Xanthe Weston and criminal psychologist Tim Watson-Munro break down the unsolved missing & murdered cases being re-examined in a landmark parliamentary inquiry. Tim & Xanthe have been working for years, alon...
Introducing: Australia's Killer Secrets 07.06.2026 1:55
What if the full story behind Australia's most notorious serial killer Ivan Milat has never been told? And what if more recent cases point to a copycat killer - or worse? In this special series of Motive&Method, forensic scientist Dr Xanthe Weston and criminal psychologist Tim Watson-Munro take you inside a landmark parliamentary inquiry examining dozens of unsolved murders and disappearances....
Is There A Byron Bay Serial Killer? 02.06.2026 34:31
Mysterious disappearances, unsolved deaths & terrifying stories - Is a killer stalking Byron Bay? And could there be more than one? In 2019, 18-year-old Belgian backpacker Theo Hayez vanished after a night out in Byron Bay and was never seen again. Since then, the disturbing death of Jackson Stacker and the mysterious cases of Hugo Palmer and Erwan Ferrieux, among others, have become part of a...
A Horrific Crime In Campbelltown: Australia's DV Crisis 26.05.2026 27:02
A mother & two young boys killed allegedly at the hands of their father - This tradegy has once again left an entire country asking how this keeps happening. The alleged murders in Campbelltown, Sydney have been described as among the most confronting domestic violence scenes seasoned investigators have encountered. Police allege the accused may have been inspired by another shocking fam...
Youth Crime & 'Crimefluencing': Clicks, Clout & Coercion 19.05.2026 30:33
Crimes for clicks, shares and online status - In this episode, Tim and Xanthe unpack the dangerous new phenomenon “crimefluencing”. Australia’s top cop recently highlighted this “new and disturbing front in traditional gender-based violence” - with young people being drawn into online networks that encourage everything from petty offending to serious violence an...
Breakthrough: Body Found In Search for Jayden Penno-Tompsett 13.05.2026 26:18
In December 2017, two young men took off on a drug-fuelled roadtrip to spend New Year's Eve in Cairns. One made it to the party - the other was never seen again. Now a shocking development could see this case finally solved. In the final episode of this special series for Outback Murder Highway, investigative journalist Amelia Oberhardt dissects the mysterious disappearance of 22-year-old Ja...
The Wrong Man? Who Killed Leanne Holland 12.05.2026 37:44
More than three decades after 12-year-old Leanne Holland was murdered in Ipswich, her case remains one of Australia’s most controversial unsolved killings. In this episode, Tim and Xanthe speak with former police officer turned private investigator Graeme Crowley, whose relentless investigation helped trigger a new coronial inquiry into the case. They unpack the disappearance and murder of L...
Bonus: Mark Jones [Extended Interview] 08.05.2026 42:29
Mark Jones’ little brother Tony was hitchhiking to meet their other brother in 1982 when he made a final phone call back home & was never heard from again. In this extended interview from the documentary series Outback Murder Highway , Mark shares his disappointment in the police investigation. He is confident someone has more information about what happened to his brother, and is hopefu...
Outback Murder Highway: The Disappearance Of Tony Jones 06.05.2026 26:14
In the early '80s a young hitchhiker vanished off the Flinders Highway - despite a mysterious tip-off in the mail, a killer’s confession, and growing rumours around one outback town, the truth remains hidden. In this third episode for Outback Murder Highway, Tim, Xanthe and investigative journalist Amelia Oberhardt unpack the unsolved disappearance of 20-year-old Tony Jones who was on...
Bonus: John Twaddle [Extended Interview] 02.05.2026 17:47
John Twaddle thought he knew who murdered his brother Gordon, but the person he had suspected has been ruled out by police on multiple occasions. Almost 50 years after Gordon was found dead off Queensland’s Flinders Highway, alongside his girlfriend Karen and mate Tim, their families are no closer to the truth. In this extended interview from the documentary series Outback Murder...
Outback Murder Highway: Triple Murder At Spear Creek 29.04.2026 24:03
In October 1978 three bodies are found at Spear Creek in remote outback Queensland - each has a single rifle shot to the head. Decades later a prime suspect is ruled out but did witnesses identify another man? In this special episode for Outback Murder Highway, Tim and Xanthe are joined again by investigative journalist Amelia Oberhardt to unpack the documentary investigation into the unsolved mur...
Bonus: David Cunningham [Extended Interview] 24.04.2026 24:50
For over fifty years, David Cunningham has been searching for the truth about his sister Anita, who vanished while hitchhiking Queensland’s notorious Flinders Highway in 1972. While her friend Robin was tragically found murdered, Anita’s fate remains one of the Outback's most enduring and haunting mysteries. In this powerful, extended interview from the documentary series Outback...
Outback Murder Highway: The Sensible Creek Killings 22.04.2026 31:21
Two 18-year-old girls disappeared on the Flinders Highway in 1972. One was found murdered, the other has never been found. In this first episode of our special series for Outback Murder Highway, Tim & Xanthe are joined by investigative journalist Amelia Oberhardt to dissect the unsolved case of Anita Cunningham and Robin Hoinville-Bartram. Could police have missed crucial evidence all those ye...
Introducing: Outback Murder Highway 16.04.2026 2:00
One Australian highway - 11 people dead or missing In this special series, criminal psychologist Tim Watson-Munro and forensic criminologist, Dr Xanthe Weston are unpacking four major cases under investigation in the exclusive new television documentary series Outback Murder Highway. In each episode, Tim & Xanthe are joined by investigative journalist Amelia Oberhardt to dissect the hist...
Ted Bundy Bonus Episode: DNA Breakthrough In Serial Killer Case 08.04.2026 33:32
Breaking news on notorious serial killer Ted Bundy decades after his execution - A DNA breakthrough has linked Ted Bundy to another cold case murder, proving his story may not be as closed as once believed. In this bonus episode, Xanthe and Tim unpack the breakthrough and what it reveals about the enduring power of forensic science. Also, how rapid advances in DNA technology are cracking lon...
Catching Peter Foster & Finding A Missing Baby: Ken Gamble (Part 2) 07.04.2026 21:21
A dramatic arrest on a Queensland beach and a years-long search for a missing baby - it’s not all cybercrime for private investigator Ken Gamble! In part two of our conversation, Ken takes us inside his pursuit of Australia’s most notorious conman, Peter Foster. Plus, how he got dragged into a major case of a missing baby in the United States - and unravelled the mother's c...
Hunting Scammers with Private Investigator Ken Gamble (Part 1) 31.03.2026 37:25
He’s helped bring down international fraud rings, recover millions for victims and hunt some of the world’s most notorious con artists - including serial swindler Peter Foster. In part 1 of Tim & Xanthe’s conversation with private investigator Ken Gamble, Ken talks overnight mafia stakeouts, unmasking one of the world’s first major online ticket scammers and busting &ls...
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