True Crime Conversations

True Crime Conversations

Mamamia Podcasts

True Crime Conversations explores the world’s most notorious crimes by speaking to the people who know the most about them. 

Follow us on TikTok @truecrimeconversations

Want us to cover a case on the podcast? Email us at truecrime@mamamia.com.au

Categories: Society & Culture

Listen to the last episode:

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

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 truecrime@mamamia.com.au 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.

Previous episodes

  • 390 - Trenny Gibson Went On A School Trip And Never Came Home 
    Wed, 11 Feb 2026
  • 389 - The 15-Minute Trial That Found Courtney Herron’s Killer Not Guilty 
    Wed, 04 Feb 2026
  • 388 - The Deadly Obsession That Drove Jodi Arias To Murder Her Lover 
    Wed, 28 Jan 2026
  • 387 - The Missing Australians You’ve Never Heard Of 
    Wed, 21 Jan 2026
  • 386 - What Happens When Your Ex Hires A Hitman To Have You Killed 
    Wed, 14 Jan 2026
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