On the surface, Tamworth in 1988 is a typical Aussie town with rodeos, farmers and an active Country Women's Association. But beneath the friendly veneer, there's a thriving criminal underbelly. Large marijuana crops grow on the outskirts of town and there are reports of bikie gangs with links to corrupt cops on the take.

The police investigation into Mark's death has stalled, allowing gossip and innuendo to take hold. The family know Mark occasionally smoked marijuana, but now they're hearing whispers that he might've got on the wrong side of some serious criminals.

The family decide to confront a man rumoured to have been involved… with ugly consequences.

Blood on the Tracks is the first ever series we made for Unravel, back in 2018.

But we're re-releasing it now with a new episode because the NSW Deputy State Coroner is currently holding a fresh inquest into this case.

Keep listening to the end of this series to find out about the new information that's recently been revealed in the inquest hearings.

This season of Unravel is intended to be listened to as a whole. If you haven't heard all the episodes, you shouldn't draw any conclusions, because you haven't heard all the sides of this story.

To binge more great episodes of Unravel, the ABC's award winning investigative true crime podcast documentary series, search 'Unravel podcast' on the ABC Listen app (Australia) or wherever you get your podcasts.

There you'll find previous series covering various crimes and crime-related topics including solved and unsolved murder cases, forensic analysis, gangland crimes, love scammers, con-artists, drugs, terrorism, neo-nazis, and miscarriages of justice — all investigated by some of Australia's best reporters and people who know the story best.