30 years after a young Aboriginal boy was found dead on the train tracks in the NSW town of Tamworth, the cause of his death remains a mystery.

After a botched police investigation, his family decided to seek answers on their own – with devastating consequences.

This week Background Briefing brings you a special investigation in collaboration with the Unravel True Crime podcast, prising open a thirty year old cold case.

Reporter Allan Clarke has spent five years of his life covering this case, revealing a police investigation overshadowed by the politics of race.