After the puzzling death of a shopkeeper in rural Australia, troubled detective Dana Russo has just 12 hours to interrogate the prime suspect - a silent, inscrutable man found at the scene of the crime, who simply vanished 15 years earlier. Where has he been? And just how dangerous is he?  Without conclusive evidence linking him to the killing, Dana must race against time to persuade him to speak.

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.

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.

When a man is found savagely 'crucified' amidst a murky swamp in northern Australia, Detective Dana Russo and her team are called to a shocking scene. The victim is a convicted rapist, just released from prison, who years earlier committed an atrocious crime yards from where he was killed. Who murdered him - and why? With several potential leads, the investigation quickly becomes more complex and sinister than anyone imagined. And Dana realises she'll have to confront her own troubled past to understand the true motives of the killer.

DS Lucas Walker is on leave in his hometown, Caloodie, looking after his dying grandmother. When two young German backpackers vanish from the area on their way to a ranch, he finds himself unofficially on the case. But why all the interest from the Federal Police, when they have probably just ditched the heat and dust of the outback for the coast? As the number of days the couple are missing climbs, DS Walker is joined by the girl's sister. A detective herself from Berlin, she is desperate to find her before it's too late.

Six minutes in the wrong place at the wrong time—that’s all it took to ruin Sydney detective Ted Conkaffey’s life. Accused but not convicted of a brutal abduction, Ted is now a free man—and public enemy number one. Maintaining his innocence, he flees north to keep a low profile amidst the steamy, croc-infested wetlands of Crimson Lake. There, Ted’s lawyer introduces him to eccentric private investigator Amanda Pharrell, herself a convicted murderer.

'Did you have to kill them all?' It's the question Gabe Ahern has been running from since he bust open a major criminal operation - and left a dozen men dead. He knows that one day the 'bad guys' will come for revenge. A skilled dog-trapper, Gabe has one rule: leave no sign, leave no trace. And for the last year he's been successfully hiding out on a friend's remote cattle property in the Pilbara.

In Unamurra, a drought-scarred, one-pub town deep in the outback, two men are savagely murdered a month apart - their bodies elaborately arranged like angels. With no witnesses, no obvious motives and no apparent connections between the killings, how can lone police officer Detective Dana Russo - flown in from hundreds of kilometres away - possibly solve such a baffling, brutal case? Met with silence and suspicion from locals who live by their own set of rules, Dana must take over a stalled investigation with only a week to make progress.

Detective Alan Auhl does things his own way - and gets results. He works cold cases now. Like the death of John Elphick - his daughters are still convinced he was murdered, the coroner not so sure. Or the skeleton that’s just been found under a concrete slab. Or the doctor who killed two wives and a girlfriend and left no evidence at all....