It’s fitting that this captivating outback crime drama begins with the discovery – in an otherworldly tunnel – of a decapitated body. Made with intoxicating precision, Treasure and Dirt is seriously obsessed with doing your head in. Using the detective procedural as a Trojan horse, the show subverts expectations and twists reality, so the fictional opal mining town of Nulla feels like a parallel realm that runs by its own arcane rules.