At police headquarters in steamy, tropical Darwin, a cop is brutally slain - right under the noses of his colleagues. The equally savage murder of select members of Darwin's legal fraternity follows, leaving investigating officers completely baffled. Is there a serial killer at large, and what connects the victims? These are the questions lead homicide investigator Russell Foley struggles with, while facing his own personal demons brought about by a failed marriage and the disintegration of his relationship with his best friend.

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.

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.

Would you turn criminal to save a child? Desperate to save his dying nephew, Mitch Walker agrees to commit a dangerous crime, in exchange for life-saving medicine. But things go horribly wrong and he sets off a chain reaction of kidnapping, carnage, and chaos. Hunted by ruthless criminals, Mitch's only hope is a cop named Betts, who wants him behind bars. But the game is about to change.

D.I. Duncan McAdam is dispatched home to the Misty Isle. A body has been found buried in a remote location on the Waternish peninsula. Well-preserved in the peat, Isla Matheson—missing for the better part of two decades—is revealed to a shocked island community. A teenage runaway is dead...and no one is talking.

Lawyer Tom McLaren makes a trip to the outback, where he hopes to talk an Aboriginal community into giving up their land to his client, a mining magnate. Negotiations prove difficult and lengthy, and Tom and his colleagues take a weekend trip deep into the outback, where they hope to get some fresh ideas. To their horror, they become caught in a dangerous altercation with a deranged gunman, and their trip soon becomes a nightmare.

A sinking boat is spotted off the South Coast. Waiting onboard is a grisly discovery. DCI Boyd, recently relocated from London to Hastings, is now with the East Sussex CID, and his first case is that of a local businessman and his new young wife, missing in the English Channel. All that remains of them is a grim scene aboard their half-submerged yacht and a digital trail of clues that could put Boyd and his daughter, Emma, in danger. 

Arriving in Mole Creek in the aftermath of Pete's death, Xander discovers that his grandfather's laptop is missing. He begins to suspect that something is wrong, refusing to accept the facts as presented. With the local police not interested in investigating an apparently open-and-shut suicide, Xander sets about uncovering the truth of what happened to his grandfather.

A woman is found in a local cemetery, crushed to death under a gravestone. A production company is there, filming the remake of a classic sci-fi TV show on the grounds, making the investigation more difficult for DCI Harry McNeil. It's his first day in charge of the cold case unit in Edinburgh. After spending four years in Professional Standards, he has little choice but to take the promotion.

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.

Wyatt robs banks and payroll vans. Most men like him are dead or in jail, but Wyatt stamps a cold, pitiless style on his heists and has never been caught. Now his funds are low and his luck is running out - until the day Anna Reid explains about the kickback in her partner’s safe. But other players are involved. In Wyatt’s world, there is no yielding, no redemption, and when he’s crossed, the outcome is inevitable.

Twenty-five years ago Joseph Wyatt was convicted for the drowning of two university students. Released from prison, Wyatt has disappeared and bodies are being found in the water. When DCI Lambert’s boss goes missing, the clock starts ticking and Lambert knows he has seven days left.

One morning Gwen Thomas takes a short walk with her Siberian husky in the outskirts of the Welsh town she calls home. She is drawn to a desolate area where, some 20 years ago as a teenager, she was brutally attacked and her friend killed. Disorientated by a sudden rush of memories, she has a fall. Later, recovering in hospital, she begins to recollect the events that led up to her friend’s death.

When a girl’s body is found strangled, raped, and horrifically mutilated by a boat’s propeller, deep in the heart of the Norfolk Broads, newly arrived Detective Inspector John Tanner is asked to assist with the investigation. At first, all the evidence points to a man who had a multi-million-pound reason to kill her. But when an alibi is produced from an unexpected source, and another body appears at the base of a slipway, Tanner finds himself turning to local girl Detective Constable Jenny Evans for help.