1933. Hannah Snow is fleeing her unhappy marriage to an MP when she finds herself in a small hotel on the banks of Loch Ness. But when a monster is spotted in the depths of the waters, the press descends – and Hannah finds her hiding place is discovered. Someone has been looking for Hannah, and when they find her events will take a devastating turn. Present day. True crime podcaster Scarlett finds herself intrigued by the mystery of Hannah Snow, wife of a promising government minister who disappeared in 1933 – just months before her husband also went missing, presumed dead.

Adelaide Hills, Christmas Eve, 1959. At the end of a scorching hot day, a local deliveryman makes a terrible discovery. A police investigation is called, and the small town of Tambilla becomes embroiled in one of the most shocking and perplexing murder cases in the history of South Australia. Many years later and thousands of miles away, Jess is a journalist in search of a story. Having lived and worked in London for nearly two decades, she now finds herself laid off from her full-time job and struggling to make ends meet. Until a phone call out of nowhere summons her back to Sydney.

The sudden death of a pupil in Fleat House at St Stephen’s—a small private boarding school in deepest Norfolk—is a shocking event that the headmaster is very keen to call a tragic accident. But the local police cannot rule out foul play and the case prompts the return of high-flying Detective Inspector Jazmine ‘Jazz’ Hunter to the force. Jazz has her own private reasons for stepping away from her police career in London, and reluctantly agrees to front the investigation as a favour to her old boss.

In the far west of Cornwall lies the White Valley, which cuts deeply through bluebell woods down to the sea at White Cove. The valley has a long and bloody history, laced with folklore, and in it sits a house above the beach that has lain neglected since the war. It comes with a reputation and a strange atmosphere, which is why mother and daughter Magdalena and Mila manage to acquire it so cheaply in the fateful summer of 1954.

Present day. Fresh from her divorce, Millie Galton moves into a former inn overlooking the harbour in Mudeford and plans to create her dream home. When a chance discovery behind an old fireplace reveals the house’s secret history as a haven for smugglers and the devastating story of its former residents, could the mystery of a disappearance from centuries ago finally be solved?

1940: In south-west Ireland, the young and beautiful Lady Charlotte Rathmore is pronounced dead after she disappears by the lake of Blackwater Hall. In London, on the brink of the Blitz, Nancy Rathmore is grieving Charlotte's death when a letter arrives containing a secret that she is sworn to keep. 2019: Ellie Fitzgerald is forced to leave Dublin disgraced and heartbroken. Abandoning journalism, she returns to rural Kerry to weather out the storm. But, when she discovers a faded letter, tucked inside the pages of an old book, she finds herself drawn in by a long-buried secret.

Maia D’Aplièse and her five sisters gather together at their childhood home–a fabulous, secluded castle situated on the shores of Lake Geneva–having been told that their beloved adoptive father, the elusive billionaire they call Pa Salt, has died. Each of them is handed a tantalising clue to their true heritage–a clue which takes Maia across the world to a crumbling mansion in Rio de Janeiro in Brazil . . .

Londoner Madeleine Grant is studying at the Sorbonne in Paris when she marries charismatic French journalist Giles Martin. As they raise their son, Olivier, they hold on to a tenuous promise for the future. Until the thunder of war sets off alarms in France. Staying behind to join the resistance, Giles sends Madeleine and Olivier to the relative safety of England, where Madeleine secures a job teaching French at a secondary school. Yet nowhere is safe. After a devastating twist of fate resulting in the loss of her son, Madeleine accepts a request from the ministry to aid in the war effort.

It's 1913, and on the surface, Laura Lyons couldn't ask for more out of life - her husband is the superintendent of the New York Public Library, allowing their family to live in an apartment within the grand building, and they are blessed with two children. But headstrong, passionate Laura wants more, and when she takes a leap of faith and applies to the Columbia Journalism School, her world is cracked wide open.

Summer 1924. On the eve of a glittering Society party, by the lake of a grand English country house, a young poet takes his life. The only witnesses, sisters Hannah and Emmeline Hartford, will never speak to each other again. Winter 1999. Grace Bradley, 98, one-time housemaid of Riverton Manor, is visited by a young director making a film about the poet’s suicide. Ghosts awaken and memories, long consigned to the dark reaches of Grace’s mind, begin to sneak back through the cracks. A shocking secret threatens to emerge – something history has forgotten but Grace never could.

When Elizabeth Keane returns to Ireland after her mother’s death, she’s focused only on saying goodbye to that dark and dismal part of her life. Her childhood home is packed solid with useless junk, her mother’s presence already fading. But within this mess, she discovers a small stash of letters — and ultimately, the truth. Forty years earlier, a young woman stumbles from a remote stone house, the night quiet except for the constant wind that encircles her as she hurries deeper into the darkness away from the cliffs and the sea.

Though Peak Plantation has been in her family for generations, Leslie Nichols can't wait to rid herself of the farm left to her by her estranged grandmother Maggie. But Leslie isn't the only one with a claim to Peak. Jay Davenport, Peak's reclusive caretaker, has his own reasons for holding onto the land bequeathed to him by Leslie's grandmother. Before she died, Maggie hinted at a terrible secret surrounding Adele Laveau, a lady's maid who came to Peak during the 1930s and died under mysterious circumstances.

In weekly phone calls to his daughter in Australia, widower Hubert Birdpaints a picture of the perfect retirement, packed with fun, friendship, and fulfillment. But it's a lie. In reality, Hubert's days are all the same, dragging on without him seeing a single soul. Until he receives some good news - good news that in one way turns out to be the worst news ever, news that will force him out again, into a world he has long since turned his back on.

Sarah Jennings knows there’s one place she can go to find some peace and quiet during her difficult divorce. But arriving at her beloved father’s home in the countryside, she finds him unwell and hunched over boxes of files, studying the records from Cedar Hall, the crumbling orphanage in town. He says that hidden behind the wrought iron gates and overgrown ivy are secrets about their family, and he asks for her help.

1957: Jean Swinney is a feature writer on a local paper in the southeast suburbs of London. Clever but with limited career opportunities and on the brink of forty, Jean lives a dreary existence that includes caring for her demanding widowed mother, who rarely leaves the house. It’s a small life with little joy and no likelihood of escape.