Brisbane 1999. It's hot. Stormy. Dangerous. The waters of the Brisbane River are rising. The rains won't stop. People's nerves are on edge. And then... A body is found. And then another. And another. A string of seemingly ritualized but gruesome murders. All the victims are men. Affluent. Guys with nice houses, wives and kids at private schools. All have had their throats cut. Tabloid headlines shout, THE VAMPIRE KILLER STRIKES AGAIN! Detective Sergeant Lara Ocean knows the look. The 'my-life-will-never-be-the-same-again look'.

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.

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.

Rachael Schlank is a straight-talking detective who’s always felt like a fish out of water, bouncing between departments over the years. Now she’s finally found a home in Victoria Police's Cold Case Unit. When a vigilante starts targeting hunters, leaving clues about a long-ago cold case, Rachael is asked to join a task force investigating the crimes...along with a former colleague whose dangerous temper has already made an impact on her life.

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.