True Crime Conversations

In October 1976, 16-year-old Trenny Gibson boarded a school bus in Knoxville, Tennessee, expecting a routine day. Instead, her horticulture class was taken on a rainy hike into the Great Smoky Mountains National Park without warning.
Unprepared and uneasy, Trenny borrowed a jacket from a fellow student. By mid-afternoon, she was gone. One moment she was on the trail, the next she had vanished. Nearly 50 years later, her disappearance remains unsolved. Questions linger about suspicious behaviour, missing evidence, and why the case quietly faded from view.
In this episode, we speak with podcast hosts Tim Pilleri and Lance Reenstierna about their investigation into the haunting mystery of Trenny Gibson.
You can listen to Tim and Lance's podcast Missing, here and watch their YouTube videos here.
Listen to Claire Murphy on Missing here.
CREDITS
Guests: Tim Pilleri & Lance Reenstierna
Host: Gemma Bath
Senior Producer: Tahli Blackman
Group Executive Producer: Ilaria Brophy
Audio Engineer: Jacob Round
GET IN TOUCH
Follow us on Instagram and TikTok @truecrimeconversations
Make sure to leave us a rating and review on Apple & Spotify to let us know how you're liking the episodes.
Want us to cover a case on the podcast? Email us at [email protected] or send us a voice note.
If any of the contents in this episode have caused distress, know that there is help available via Lifeline on 13 11 14 or Beyond Blue on 1300 22 4636.
We acknowledge the Traditional Owners of the Land we have recorded this podcast on, the Gadigal people of the Eora Nation. We pay our respects to their Elders past and present and extend that respect to all Aboriginal and Torres Strait Islander cultures.
Become a Mamamia subscriber: https://www.mamamia.com.au/subscribe
See omnystudio.com/listener for privacy information.

In May 2019, 25-year-old Courtney Herron was murdered after a night out in Melbourne’s CBD. What happened next would ignite national outrage and raise disturbing questions about justice in Australia.
In this episode, Courtney’s father, John Herron, speaks about the daughter he loved deeply, her generosity, humour, and instinctive kindness, and the night she crossed paths with the man who killed her. He lays bare the failures he witnessed inside the justice and mental health systems, and explains why, as both a grieving father and a lawyer, he believes Courtney was denied justice.
You can read more from John Herron in his writing for Mamamia, including his powerful open letter about Courtney’s death, here.
CREDITS
Guest: John Herron
Host: Gemma Bath
Senior Producer: Tahli Blackman
Group Executive Producer: Ilaria Brophy
Audio Engineer: Jacob Round
GET IN TOUCH
Follow us on Instagram and TikTok @truecrimeconversations
Make sure to leave us a rating and review on Apple & Spotify to let us know how you're liking the episodes.
Want us to cover a case on the podcast? Email us at [email protected] or send us a voice note.
If any of the contents in this episode have caused distress, know that there is help available via Lifeline on 13 11 14 or Beyond Blue on 1300 22 4636.
We acknowledge the Traditional Owners of the Land we have recorded this podcast on, the Gadigal people of the Eora Nation. We pay our respects to their Elders past and present and extend that respect to all Aboriginal and Torres Strait Islander cultures.
Become a Mamamia subscriber: https://www.mamamia.com.au/subscribe
See omnystudio.com/listener for privacy information.

The case of Jodi Arias, the woman who murdered her former lover, Travis Alexander, in 2008, captivated audiences around the world. When the trial began in 2013, media coverage intensified, driven by a disturbing question: what could compel a young, attractive woman to kill so violently? To shoot, stab, and nearly decapitate a man she claimed to have loved?
These are just some of the questions journalist Briana Whitney set out to explore in her True Crime Arizona documentary, Obsessed: Unravelling Jodi Arias.
Whitney has even been in direct contact with Arias herself, who continues to blog and exchange emails from inside her prison cell.
Watch Obsessed: Unravelling Jodi Arias here.
CREDITS
Guest: Briana Whitney
Host: Gemma Bath
Senior Producer: Tahli Blackman
Group Executive Producer: Ilaria Brophy
Audio Engineer: Jacob Round
GET IN TOUCH
Follow us on Instagram and TikTok @truecrimeconversations
Make sure to leave us a rating and review on Apple & Spotify to let us know how you're liking the episodes.
Want us to cover a case on the podcast? Email us at [email protected] or send us a voice note.
If any of the contents in this episode have caused distress, know that there is help available via Lifeline on 13 11 14 or Beyond Blue on 1300 22 4636.
We acknowledge the Traditional Owners of the Land we have recorded this podcast on, the Gadigal people of the Eora Nation. We pay our respects to their Elders past and present and extend that respect to all Aboriginal and Torres Strait Islander cultures.
Become a Mamamia subscriber: https://www.mamamia.com.au/subscribe
See omnystudio.com/listener for privacy information.

Two 15-year-olds vanish after heading to a disco in Wollongong.
An 18-year-old Belgian backpacker disappears after a night out in Byron Bay.
A 20-year-old Navy recruit vanishes from a casino lobby in a matter of minutes.
These are just a few of Australia’s missing persons cases you may never have heard of. Each year, more than 56,000 people are reported missing across the country. Most are found. But over 2,500 remain missing long-term, their names and stories slowly fading from public memory.
Nicole Morris, Director of the Australian Missing Persons Register and author of Vanished and Missing, refuses to let them be forgotten.
Find the Australian Missing Persons Register here.
Find Nicole's books here.
CREDITS
Guest: Nicole Morris
Host: Gemma Bath
Senior Producer: Tahli Blackman
Group Executive Producer: Ilaria Brophy
Audio Engineer: Jacob Round
GET IN TOUCH
Follow us on Instagram and TikTok @truecrimeconversations
Make sure to leave us a rating and review on Apple & Spotify to let us know how you're liking the episodes.
Want us to cover a case on the podcast? Email us at [email protected] or send us a voice note.
If any of the contents in this episode have caused distress, know that there is help available via Lifeline on 13 11 14 or Beyond Blue on 1300 22 4636.
We’re giving away a Your Reformer Pilates bed (worth $3,400) Subscribe to enter
We acknowledge the Traditional Owners of the Land we have recorded this podcast on, the Gadigal people of the Eora Nation. We pay our respects to their Elders past and present and extend that respect to all Aboriginal and Torres Strait Islander cultures.
Become a Mamamia subscriber: https://www.mamamia.com.au/subscribe
See omnystudio.com/listener for privacy information.

Who would try to hire a hitman to kill an innocent young girl?
In early 2021, Riley ended a relationship with a man she had been in a year-long online relationship with after she alleges he assaulted her. Despite the breakup, he continued to message her relentlessly.
Instead of backing down, Scott escalated his feelings of anger, turning to the dark web. He paid $19,000 AUD to hire a hitman to kill her.
The reality of the plot became clear when police knocked on the door of Riley’s family home. It was her mother, Jamie Elder, who answered, learning that someone had tried to arrange her daughter’s murder.
Jamie is now Riley’s advocate, fighting for justice while the man accused of orchestrating the hit walks free. You can follow Jamie on TikTok and support her advocacy here.
CREDITS
Guest: Jamie Elder
Host: Gemma Bath
Senior Producer: Tahli Blackman
Group Executive Producer: Ilaria Brophy
Audio Engineer: Jacob Round
GET IN TOUCH
Follow us on Instagram and TikTok @truecrimeconversations
Make sure to leave us a rating and review on Apple & Spotify to let us know how you're liking the episodes.
Want us to cover a case on the podcast? Email us at [email protected] or send us a voice note.
If any of the contents in this episode have caused distress, know that there is help available via Lifeline on 13 11 14 or Beyond Blue on 1300 22 4636.
We’re giving away a Your Reformer Pilates bed (worth $3,400) Subscribe to enter
We acknowledge the Traditional Owners of the Land we have recorded this podcast on, the Gadigal people of the Eora Nation. We pay our respects to their Elders past and present and extend that respect to all Aboriginal and Torres Strait Islander cultures.
Become a Mamamia subscriber: https://www.mamamia.com.au/subscribe
See omnystudio.com/listener for privacy information.