When Cissy Ryan’s real mother comes to claim her from the workhouse, it’s not how she imagined. Her family’s tumbledown cottage has ice on the inside of its windows and is in an isolated, poverty-stricken village in the muddy Irish countryside. But when Cissy is allowed to help neighbour Colm Doyle and his horse named Blue on their milk round one morning, Cissy starts to feel as though friendship could get her through anything.

Dublin, 1952. When Mary Kate Ryan receives a surprise inheritance from the woman who abandoned her as a tiny baby, she’s stunned. All her life, she has longed to know why her mother disappeared, and now she’s devastated to realize that every lonely night she spent without a home or family of her own, her mother knew exactly where she was.

London, 1942: Thirteen-year-old Nell and five-year-old Olive are being sent away from home to escape the devastation of the East End during the Blitz. Leaving behind their beloved mother and brothers, they don’t know if they will ever see them again. As the sisters adjust to their new life in a close-knit Welsh village, they gradually find hope in the friendships they make. And Nell kindles a special bond with fellow evacuee Jimmy, who makes her smile even at the hardest of times. But when little Olive’s safety is threatened, Nell makes a decision that will change their lives forever.

London 1940. As the war rages in Europe, Rose Brown steps on board a ship bound for America, hoping to escape the danger. She's frightened, but her widowed mammy and three sisters in Ireland need the money she earns as nanny to the rich Townsend family. But while Rose plays with baby Sarah in the salty spray on deck, disaster strikes, and the ocean liner begins to sink. In the chaos, Rose and the baby are separated from the family.

Bristol 1936. Jenny Crawford has resigned herself to a loveless marriage living hand to mouth with their two children. Like many others, husband Roy struggles to find work at the docks but a chance encounter turns the family's fortunes around. Not only does he get regular work but they are also allocated a council house on Coronation Close on the outskirts of the city. Jenny and the children are overjoyed, this is the fresh start she could only ever dream of. But trouble feels never too far away.

Libby Trent has worked hard to make a good life for herself. She has a happy, messy home in Virginia, full of family and laughter. And a job she’s enormously proud of at a charity helping the disadvantaged, that suits her strong sense of what’s right and wrong. But everything changes the day she’s contacted by a government official asking questions about a man named Hans Brenner, a Nazi who escaped Germany after the Second World War. A war criminal guilty of the most heinous deeds. And the man they suspect is Libby’s own father.

A lost girl. A mysterious house in Ireland. An invitation that changes everything. Twenty years ago, at the end of a hot long Irish summer, three sisters walk down to the cool lake at their home, Swan Hall. As Maeve and Aisling watch their beautiful younger sister Nuala laughing and splashing, it is hard to hide their envy of her. But later that morning, when Nuala drowns, they are devastated. Now, as Iris scatters the ashes of her beloved mother Aisling onto the golden leaves of Central Park, she feels very alone.

On a leafy suburban street in Dublin, beautiful, poised Stella Greene lives with her successful husband, Matt. They're the perfect couple in every way, and Stella appears to have it all. Next door, at number 72, however, lives Rea Brady. Gruff, bad tempered and rarely seen besides the twitching of her net curtains, rumour has it she's lost it all...including her marbles, if you believe the neighbourhood gossip. But appearances can be deceiving, and when Stella and Rea's worlds collide they realise they have much in common.

Lancashire, 1895. When her controlling stepfather suddenly dies, it seems that Elinor Pendleton finally has a chance of freedom. But her hopes are soon dashed when she learns that the thuggish Jason Stafford has inherited every penny, and is determined to have Elinor too. Forced to flee with her maid, Maude, Elinor finds shelter with Maude's distant cousin in the remote village on the shore of Jubilee Lake. But Walter Crossley has troubles of his own. Having lost his closest family in a tragic accident, he needs one of his grandsons to return from America to inherit his farm.

In 1820, Salem Street is sparkling and new: eight small terraced houses built by a Lancashire mill owner for his best workers. Annie Gibson's family is one of the first to move in - a step up in the world for them. But when her mother dies, Annie's happy childhood ends and she is left to bring up her brother and sister. Red-haired, intelligent and startlingly pretty, Annie soon finds herself banished from home by a jealous stepmother. She finds work in the local doctor's household, where she learns about the fascinating world outside Salem Street.

Hampshire, 1913. Amidst the glitz and glamour of England’s High Society, Sarah Trenwith is more of a wallflower living in the shadow of her beautiful sister Marianne. But as the war approaches Sarah will have to step out of the place society and her family have assigned her if she’s to do her part and claim the love she always dreamed of from afar.

Yorkshire Dales, 1850. As a terrible storm rages, Annabelle Wallis is shocked to find a distressed young woman at her cottage door, heavy with child. Moments later a baby girl is born. But by dawn, the mother has vanished, leaving behind the helpless child wrapped only in a silk peacock shawl. When news spreads that Lady Eliza Hartley, sister to a wealthy estate owner, has been found dead, Annabelle realises the terrible secret she has stumbled on. Terrified she’ll be blamed for Eliza’s death, Annabelle flees to the slums of York, where she plans to raise the orphan as her own.

In a village in Wiltshire, just off a busy road, Larch Tree Lane winds slowly up a low hill. Among the residents is Maggie Hatherall, full of life despite her advancing years, who worries what she is going to do with her 200-year-old home. Lucia Grey has escaped a bad marriage but her ex is reluctant to let her start a new life free of him. And for architect Corin Drayton, an unexpected inheritance is the start of a complicated family wrangle. From the cottages and farms to the local shop, pub and old manor house, the residents' lives are set to intertwine and relationships bloom.

Janey is 18 and living in a small flat with her baby daughter. Just as her new life starts to show promise, her past catches up with her. Nicole is renting one of the new luxury flats. She’s just walked away from her husband and teenage sons, tired of being treated as a servant, suspecting her husband of having an affair. Winifred has lived in her large family home for over 80 years but it’s all getting too much, though she doesn’t want to leave. Things are not what they seem, and danger can strike both rich and poor.

I never expected to have to uproot my family to go live in my parents’ isolated cottage on Lost Lake. It’s twenty miles to the nearest town, an insignificant speck in endless pine forests. Nobody’s lived here for a decade. Now, I pick up a rusty pail from its nest of autumn leaves and turn to my daughter. Suddenly, I recall how I used to help my own mother pick wild strawberries up here as a little girl. Maybe, this isn’t a punishment. Maybe this place will be the making of our family.