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Motive & Method

Motive & Method

TAPT Podcasts 100 Episodes Jun 30, 2026

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.

Episodes

A Family Vanished: The 'Nannup Cult' Mystery Jun 30, 2026 2468 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 Jun 26, 2026 1821 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 scr
5. Cheryl Grimmer: A Confession Ignored- A Child Killer Never Caught Jun 23, 2026 1749 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 de
4. Keren Rowland: Was She Ivan Milat's First Victim? Jun 16, 2026 1962 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 lead
3. Kevin Docherty: 47 Years Searching For Answers Jun 11, 2026 1633 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 l
2. Ivan Milat's 11 Other Victims? Jun 11, 2026 1331 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 Wats
1. Australia's Killer Secrets: Milat, Murders & Missing Jun 10, 2026 1725 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, alongs
Introducing: Australia's Killer Secrets Jun 7, 2026 115 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.F
Is There A Byron Bay Serial Killer? Jun 2, 2026 2071 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 May 26, 2026 1622 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 fami
Youth Crime & 'Crimefluencing': Clicks, Clout & Coercion May 19, 2026 1833 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 May 13, 2026 1578 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 Jay

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