Detective Rebecca Giles has just finished interviewing aging petty crim Sticky Pete over a spate of break-and-enters when a disturbing new report comes in. Twelve-year-old Kayleen Ellis has vanished from her home in Muswellbrook in the Upper Hunter Valley. Hours later, Giles is a local hero, having apparently solved Kayleen's case and the spate of jewellery thefts. Yet the hangover from her celebrations has barely kicked in when the body of young jillaroo Ava Emmerson is discovered in gruesome circumstances on a nearby farm.

1987: It's late summer and a time of change when a 17-year-old girl leaves the local shopping center in the sleepy town of Lowbridge and is never seen again. Her unsolved disappearance is never far from the town's memory. There's those who grew up in the shadow of her loss whose own lives were altered forever, and those who know more than they're saying. It just takes an outsider to ask the right questions.

Detective Sergeant Mark Ariti has taken a few days' holiday in Broken Bay at precisely the wrong time. The small fishing town on South Australia's Limestone Coast is now the scene of a terrible tragedy. Renowned cave-diver Mya Rennik has drowned while exploring a sinkhole on the land of wealthy farmer Frank Doyle. As the press descends, Mark's boss orders him to stay put and assist the police operation. But when they retrieve Mya's body, a whole new mystery is opened up, around the disappearance of a young local woman twenty years before.

During a broiling heatwave, the inner circle of a high-profile charity attend a critical meeting at White Ash Ridge, a small hotel nestled in the Australian wilderness. As the temperature rises, a body is found lying in the thick bush, bludgeoned to death. One of the four remaining guests is a murderer - but who, and why, is a mystery. Detective Dana Russo knows the national spotlight will be sharply focused on the case. The charity was formed when the founders' teenage son was killed after intervening in a vicious assault - sparking public outrage and a damning verdict on the investigation.

Jimmy is a kid growing up fast on the poorest street in town. He tries to do everything right and look out for his mum and his younger brother. His older brother is in jail, so it's up to Jimmy to hold things together. But small-town life is unforgiving if you're from the other side of the tracks.