As single mother Leah struggles to get her children ready one morning, the doorbell rings. Standing on the doorstep of their terraced house in Whitley Bay is a well-dressed stranger, Clio, who feels an emotional tie to the house that she can’t explain.

When Cara stumbles across a stash of old postcards in the attic, their contents make her question everything she thought she knew. The story she pieces together is confusing and unsettling, and appears to have been patched over with lies. But who can tell her the truth? With her father sinking into Alzheimer’s and her brother reluctant to help, it seems Cara will never find the answers to her questions. One thing is clear, though: someone knows more than they’re letting on.

The chaotic but happy equilibrium of the Nightingale family is thrown into disarray when Cecily - whose children can't remember her ever being remotely spontaneous - disappears to a Greek island with no warning or explanation. Her reasons for doing something so out of character are a total mystery to her three daughters, high-powered executive Felicity, unfulfilled GP Julia and organised mother-of-five Lily.

Pip Appleby seems to have it all, with her prestigious job as a human rights lawyer and her enviable London home. But then a tragic accident stops her life in its tracks, and in an instant everything changes. Retreating to her family’s rural farm and the humble origins she has been trying to hide, Pip is haunted by what she has done. When she discovers the diary of actress Evelyn Mountcastle in a box of old books, Pip revels in the opportunity to lose herself in someone else’s life rather than focus on the disaster that is her own. But soon she sees parallels....

In the long, hot summer of 1995, 22-year-old Alice Lang rents a caravan on a holiday park on the outskirts of the lively holiday resort of Severn Sands. She befriends Marnie, a shy, damaged little girl whose father is the park's caretaker and whose mother died a few months earlier. Will, whose mother runs the bar, falls in love with Alice and is unbearably jealous of anyone else she sees. Tensions rise until one evening Alice disappears from her caravan. She's never seen again, and only her scarlet dress is found washed up on the shore.

Caroline Grant is struggling to accept the end of her marriage when she receives an unexpected bequest. Her beloved great-aunt Lettie leaves her a sketchbook, three keys, and a final whisper...Venice. Caroline’s quest: to scatter Juliet “Lettie” Browning’s ashes in the city she loved and to unlock the mysteries stored away for more than 60 years. 

Christmas Eve, 2019. Ninety-four-year-old Molly lies in her hospital bed. A stroke and a fall may have broken her body - but her mind is alive with memories. London, 1940s. Molly is a bright young woman, determined to help the war effort and keep her head up despite it all. Life becomes brighter when she meets and falls in love with a man who makes her forget everything with one dance. But then war forces her to make an unforgettable sacrifice.

When Nick’s wife Kerry falls ill and dies, he realises for the first time how fragile his happiness has always been, and how much he’s been taking his good life and wonderful family for granted. Now, he suddenly finds himself navigating parenthood alone, unsure how to deal with his own grief, let alone that of his teenage son, Olly.

Anna Cole grew up poor, but her mother's love made her feel rich every day. Then her mother died, and Anna was sent to a care home. As a teenager, Anna vowed that one day she would have children of her own and create the happy, noisy family life she always craved. Then, one day, Anna meets Theo Montgomery in a lift. Theo has kind eyes but a sad past. His family were rich, but his childhood was full of neglect. Theo can't imagine bringing a child into this cruel world, but he does want a soul mate. Someone to love him unconditionally; someone with whom he can share his family's wealth.

After the tragic loss of his wife, Helen, Luke Hansard is desperate to keep her memory alive. In an effort to stay close to her, he reaches out to an online friend Helen often mentioned: a reclusive photographer with a curious interest in beautiful but broken objects. But first he must find her - and she doesn’t want to be found. Orla Kendrick lives alone in the ruins of a remote Suffolk castle, hiding from the haunting past that has left her physically and emotionally scarred.

Thomasina "Hitch" Waycott loves living and working on the remote family farm and B&B. But she also wants more. To see the world. To own her own home. To fall madly in love. But those are fairy tales, and if her life is a fairy tale, then she’s the ugly duckling. Her deformed lip, her crooked limbs and her weak heart have kept her from taking chances. But that’s about to change. When Grayson Potts comes to stay, he’s unlike anyone Thomasina has ever met.

Penny and Victoria are about as different as two siblings can be, one with a smart London lifestyle, the other struggling to make ends meet. But they are joined by more than blood, and their shared tragic past is affecting the present more than they realise. When events begin to tug at the fabric beneath which dark secrets are hidden, the resulting chaos threatens to tear the two families apart. Could there be aspects of the past that youngest child Penny doesn't remember? Could the truth of Marge be more complex than the beloved mother the girls choose to perceive?

Emma and Dele’s dreams came true nine years ago when they adopted their daughter, Isla. It felt like fate, like they were meant to find each other, and now they’re living the life they always wanted. But then one day a new family moves into Forest Grove - and Emma can’t shake the chilling feeling that the wife looks just like Isla’s birth mother. Emma tells herself that this sophisticated stranger can’t possibly be the troubled woman she remembers from the adoption. But as they get to know each other, it becomes clear that Tatjana has a special interest in Isla.

The six D’Aplièse sisters have each been on their own incredible journey to discover their heritage, but they still have one question left unanswered: who and where is the seventh sister? They only have one clue - an image of a star-shaped emerald ring. The search to find the missing sister will take them across the globe - from New Zealand to Canada, England, France and Ireland - uniting them all in their mission to complete their family at last.

Nina McCarrick has it all: a loving husband, two beautiful boys, a well-appointed home and more time than she knows what to do with. Life is perfect. Until her husband, Finn, is killed in a car accident and everything Nina thought she could rely on unravels.