Five women reluctantly leave the city for a challenging hike across the rugged Giralang Ranges as part of a corporate retreat. Only four come out the other side. Federal Police Agent Aaron Falk has a particularly keen interest in the whereabouts of the missing bushwalker. Alice Russell is the whistleblower in his latest case - and Alice knew secrets.

Three brothers, one death, a fenceline stretching to the horizon. Two brothers meet at the border of their vast cattle properties under the unrelenting sun of outback Queensland. They are at the stockman's grave, a landmark so old, no one can remember who is buried there. But today, the scant shadow it casts was the last hope for their middle brother, Cameron. The Bright family's quiet existence is thrown into grief and anguish. Something had been troubling Cam. Did he lose hope and walk to his death? Because if he didn't, the isolation of the outback leaves few suspects.... 

A crime wave has hit town. The target is a highly sought-after brand of streetwear called Hybird X, clothing that costs a fortune and resells for unbelievable prices. Houses are burgled, kids mugged on the streets...and finally a young man dies, all for the sake of his shoes. Then another boy’s body is found in a pile of rubbish. Meanwhile illegal steroids are flooding the streets. And there are dark movements on the marshes. 

Indiana O’Meara is no stranger to the forces of evil. Now a policewoman, Indy is always fighting to redeem herself and defeat the dark. So when girls begin to go missing at a remote cattle station in Tasmania, she agrees to go undercover to investigate chief suspect Logan Atherton, the owner of Calico Mountain Lodge. But her early encounter with Logan reveals a man full of contradictions. His deep empathy for horses and those he cares for is obvious but he is also taciturn to the point of rudeness, and there is a strange atmosphere at the lodge. It doesn’t add up.

The domestic bliss of Detective Inspector Rowan Jackman, of Fenland Constabulary, doesn’t last long. His old nemesis, serial killer Alistair Ashcroft, is back in town and ready to tidy up unfinished business. Ashcroft sends a sinister text to DS Marie Evans. His opening move in what will prove to be a lethal game of cat-and-mouse. Yet for all his taunts, where is he? In a county crawling with police on the look-out for him, Ashcroft is nowhere to be found. Everyone Jackman cares about is in danger. Alongside the hunt for Ashcroft, however, normal police work must continue.

Galway 1993: Young Garda Cormac Reilly is called to a scene he will never forget. Two silent, neglected children - 15-year-old Maude and five-year-old Jack - are waiting for him at a crumbling country house. Upstairs, their mother lies dead. Twenty years later, a body surfaces in the icy black waters of the River Corrib. At first it looks like an open-and-shut case, but then doubt is cast on the investigation's findings - and the integrity of the police. Cormac is thrown back into the cold case that has haunted him his entire career - what links the two deaths, two decades apart?

Jackman’s sister-in-law Sarah disappears to London and throws herself into the river. What drove her to this? She was a woman with a seemingly happy home life and two beloved sons. DI Jackman and DI Evans dig into Sarah’s life. And Jackman realises he knew almost nothing about his sister-in-law’s past. Then, they discover a woman in a neighbouring village died in similar circumstances. What is the connection to a convicted murderer whose family are convinced he is innocent? Who is really pulling the strings?

DI Nikki Galena: A police detective with nothing left to lose, she's seen a girl die in her arms, and her daughter will never leave the hospital again. She's gotten tough on the criminals she believes did this to her. Too tough. And now she's been given one final warning: make it work with her new sergeant, DS Joseph Easter, or she's out.

In Riversend, an isolated country town brought to its knees by endless drought, a charismatic and dedicated young priest steps out of his church and calmly opens fire on his congregation, killing five parishioners before being shot dead himself. A year later, troubled journalist Martin Scarsden arrives in Riversend to write a feature on the anniversary of the tragedy. But the stories he hears from the locals about the priest and incidents leading up to the shooting don't fit with the accepted version of events his own newspaper reported in an award-winning investigation. 

Revellers are flocking into Greenborough for the yearly Dark Greenborough Festival, a three-day event celebrating local folklore, superstition, and the darker side of life. What the public doesn't know is that there has been a warning sent to the police, saying that Greenborough will be a very dangerous place this year. The anonymous letter ends with the Latin phrase, Mors certa, hora incerta: Death is certain, the hour uncertain.