Thirty-eight year old Cassandra is lost, alone, and grieving. Her much loved grandmother, Nell, has just died and Cassandra, her life already shaken by a tragic accident 10 years ago, feels like she has lost everything known and dear to her.

Living on her family’s gorgeous lakeside estate in Cornwall, England, Alice Edevane is a bright, clever, inquisitive, innocent, and precociously talented fourteen-year-old who loves to write stories. But the mysteries she pens are no match for the one her family is about to endure ...One midsummer’s eve, after a beautiful party drawing hundreds of guests to the estate has ended, the Edevanes discover that their youngest son, Theo, has vanished without a trace.

England, 1959: Laurel Nicolson is 16 years old, dreaming alone in her childhood tree house during a family celebration at their home, Green Acres Farm. She spies a stranger coming up the long road to the farm and then observes her mother, Dorothy, speaking to him. And then she witnesses a crime.

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.

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 lost child: On the eve of the first world war, a little girl is found abandoned on a ship to Australia. A mysterious woman called the Authoress had promised to look after her – but the Authoress has disappeared without a trace. A terrible secret: On the night of her 21st birthday, Nell O'Connor learns a secret that will change her life forever. Decades later, she embarks upon a search for the truth that leads her to the windswept Cornish coast and the strange and beautiful Blackhurst Manor, once owned by the aristocratic Mountrachet family.

1961. On a sweltering summer’s day, while her family picnics by the stream on their Suffolk farm, 16-year-old Laurel hides out in her childhood tree house, dreaming of the bright future she can’t wait to seize. But before the idyllic afternoon is over, Laurel will have witnessed a shocking crime that changes everything. 2011. Now a much-loved actress, Laurel finds herself overwhelmed by shades of the past. Haunted by memories and the mystery of what she saw that day, she returns to her family home and begins to piece together a tale of three strangers from vastly different worlds.

It is 1951, and at number six Sycamore Street, fifteen-year-old Edie Green is lonely. Living with her eccentric mother and her mother's new boyfriend, she is desperate for something to shake her from her dull, isolated life. So when the popular, pretty Lucy Theddle befriends Edie, she thinks all her troubles are over. Even though Lucy has a secret, one Edie is not certain she should keep. Then Lucy goes missing. Now in 2018, Edie is eighty-four and still living in the same small town, when one afternoon she glimpses Lucy Theddle, still looking the same as she did at fifteen.

It is 1987, and a small Irish community is preparing for a wedding. The day before the ceremony, a group of young friends, including the bride and groom, are involved in an accident. Three survive. Three are killed. The lives of the families are shattered and the rifts between them ripple throughout the small town. Connor survived, but living among the angry and the mourning is almost as hard as carrying the shame of having been the driver. He leaves the only place he knows for another life, taking his secrets with him.

In the heyday of the British Raj, 11-year-old Anahita, from a noble but impoverished family, forms a lifelong friendship with the headstrong Princess Indira, the privileged daughter of rich Indian royalty. Becoming the princess's official companion, Anahita accompanies her friend to England just before the outbreak of the Great War. There, she meets the young Donald Astbury - reluctant heir to the magnificent, remote Astbury Estate - and his scheming mother.

Living on her family’s idyllic lakeside estate in Cornwall, England, Alice Edevane is a bright, inquisitive and precociously talented 16-year-old who loves to write stories. One midsummer’s eve, after a beautiful party drawing hundreds of guests to the estate has ended, the Edevanes discover that their youngest child, 11-month-old Theo, has vanished without a trace. He is never found, and the family is torn apart and the house abandoned.

Germany, 1941: I stroke the blonde curl away from my daughter’s face, and my heart swells. I never imagined having children, and I never thought I’d love someone this much. Clara is the most precious thing to me. I whisper to her that I will do everything I can to keep her safe.

Seventeen-year-old Lenni Pettersson lives on the Terminal Ward at the Glasgow Princess Royal Hospital. Though the teenager has been told she’s dying, she still has plenty of living to do. Joining the hospital’s arts and crafts class, she meets the magnificent Margot, an 83-year-old, purple-pajama-wearing, fruitcake-eating rebel, who transforms Lenni in ways she never imagined. As their friendship blooms, a world of stories opens for these unlikely companions who, between them, have been alive for one hundred years.

Elizabeth and Jackson Shore married young, raised two daughters, and weathered the storms of youth as they built a future together. But after the children leave home, they quietly drift apart. When Jack accepts a wonderful new job offer, Elizabeth puts her needs aside to follow him across the country. Until the sudden death of her father changes everything.

When an impossibly shy young woman named Judy Morgan finishes her studies in Physics at Cambridge University, it is with dreams of changing the world for the better. Meanwhile, a beautiful, young Jewish woman decides to flee her beloved Austria, changing her name to Hedy Lamarr, and risking everything to get to America, as far away from the Nazi threat as possible.