On the morning of 21 March 1972, 14-year-old Marilyn Wallman left her family home in Mackay, Queensland, on her bicycle to catch the school bus. Just minutes later, her bike and school bag were found abandoned on the side of the road. Marilyn was gone.

For more than five decades, her family has been left without answers. Marilyn was believed to have been abducted and murdered, but only a fragment of her remains was ever recovered — and no one has ever been charged. Now, 54 years later, a second coronial inquest is revisiting the case, examining new evidence, conflicting accounts and allegations surrounding people who may have known more than they originally admitted.

In this episode, we look at Marilyn's life, the morning she disappeared, the investigation that followed, the evidence uncovered over the decades, and the latest developments from the 2026 inquest. With the proceedings now paused until December after a new witness came forward, could Marilyn's family finally be one step closer to finding out what happened to her?

Intro Clip: https://www.youtube.com/watch?v=n3JqB8x_kTw
Skip ahead to episode: 07.05

☕ Support Clueless Crime:
buymeacoffee.com/cluelesscrime

❤️ Join us on Patreon:
patreon.com/cluelesscrime

📸 Follow us on Instagram:
instagram.com/cluelesscrimepodcast

🛍️ Shop Clueless Crime Merch:
https://clueless-crime-shop.fourthwall.com/en-aud

When 17-year-old Mackenzie Cowell failed to come home for dinner one night in February 2010, her family immediately knew something was wrong. Her abandoned car was found miles from home, and four days later, Mackenzie’s body was discovered along the banks of the Columbia River. What followed was a bizarre investigation involving changing stories, questionable leads and a suspect who had been much closer to Mackenzie than anyone initially realised.

Intro Clip: https://www.youtube.com/watch?v=WfiZXXbiy4U

Skip ahead to episode: ⁠⁠11:45

buymeacoffee.com/cluelesscrime⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠

⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠instagram.com/cluelesscrimepodcast ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠