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.

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.

Sydney, 1965: After a chance encounter with a stranger, mild-mannered tea lady Hazel Bates becomes an accidental sleuth, stumbling into a world of ruthless crooks and racketeers in search of a young woman she believes to be in danger. In the meantime, Hazel's job at Empire Fashionwear is in jeopardy. The firm has turned out the same frocks and blouses for the past twenty years and when the mini-skirt bursts onto the scene, it rocks the rag trade to its foundations. War breaks out between departments and it falls to Hazel, the quiet diplomat, to broker peace and save the firm.

Lowen Ashleigh is a struggling writer on the brink of financial ruin when she accepts the job offer of a lifetime. Jeremy Crawford, husband of best-selling author Verity Crawford, has hired Lowen to complete the remaining books in a successful series his injured wife is unable to finish. Lowen arrives at the Crawford home, ready to sort through years of Verity's notes and outlines, hoping to find enough material to get her started. What Lowen doesn't expect to uncover in the chaotic office is an unfinished autobiography Verity never intended for anyone to read.

Summer, 2000. In the tranquil town of Queen's Point in southern Australia, the Whitlam family marks the end of every season with a lavish party in their clifftop mansion. Here, clutching her first glass of real champagne, the summer breeze intoxicating on her skin, sixteen-year-old Lucy Ross is kissed for the very first time. And then, in the shadows of the rose garden, she sees something she shouldn't.

Detective Chief Inspector Harry Grimm is forced to take leave from Bristol’s Major Investigations Team when his boss, tired of Harry chasing the ghost of his murderous father, sends him north on secondment. Used to city life and high stress, Harry fears his life will now be spent handing out speeding tickets, finding lost sheep, and directing tourists. But when a local teenager runs away, Harry finds himself pulled into an investigation much worse than anyone could have ever expected.

Gemma Hayden has returned to her hometown of Alice Springs for a new job as a primary school teacher. It's been six years since her family broke apart following the disappearance of her twin brother. And the scars still run deep. Hard on the heels of her homecoming, Saul Pearce, the man she once loved, is reposted from Parks and Wildlife in Darwin back to Alice. When an old car wreck is uncovered, washed down the river to Ruby Gap, Saul investigates only to find that the wreck belonged to Ethan, Gemma's twin—and there's a coded note for her in the glovebox.

Was the biggest case of his career the worst mistake he ever made? Ten years ago, DCI Jack Logan stopped the serial child-killer dubbed "Mister Whisper", earning himself a commendation, a drinking problem, and a broken marriage in the process...When another child disappears a hundred miles north in the Highlands, Jack is sent to lead the investigation and bring the boy home. But as similarities between the two cases grow, could it be that Jack caught the wrong man all those years ago?

The story opens with the apparently accidental drowning of a sixth form student in the Norfolk countryside. As a matter of routine, or so it seems, the case passes across the desk of Detective Sergeant Smith, recently returned to work after an internal investigation into another case that has led to tensions between officers at Kings Lake police headquarters. As an ex-DCI, Smith could have retired by now, and it is clear that some of his superiors wish that he would do so.

Following their daughter's mysterious disappearance, Ryan and Elsie Delaney have taken the LAPD forensic lab hostage, and have given law enforcement an ultimatum: Find their daughter, Tilly, or they will destroy all the evidence they can find to other cold cases. Detective Charlie Hoskins has been undercover in a deadly motorcycle gang for five years. With his cover blown, he has no choice but to find Tilly himself, or lose everything he's worked for as the lab burns.