Although she's surrounded by a loving family, Marie feels lost: living with a lie can be very lonely. Marie has been carrying a secret for years, one that could ruin the lives of those she loves most, and the guilt she feels weighs heavily. Her granddaughter, Cathy, is a most cheerful young woman, and in the first flush of love. The secret Marie is about to tell her will not only change her future but rewrite her past. Cathy now has a dangerous choice to make that could change her life forever.

When Rosie’s parents were involved in a train accident, her mother was killed and her father left crippled, unable to earn a living and relying on Rosie to keep the wolf from the door. With her mother gone and her sweetheart Adam away in the army, Rosie is lonely. She eagerly awaits the letters from him, but they never come. As she grows more disillusioned, Adam’s best friend Doug goes out of his way to be charming and attentive. Alone and confused, Rosie blossoms under his evil influence.

The holidays are here, and in Salcombe, Liz longs for the arrival of her god-daughters, Skye and Clare and Clare's daughter baby Ivy. After years on her own, she needs help to save the catering business she built with Clare's late mother, Jen. However, half-sisters Skye and Clare couldn't be more different, struggling with family secrets and hidden jealousies. As the women navigate this unexpected summer together, truths are revealed and their relationships are put to the test.

Cyril Avery is not a real Avery - or at least that's what his adoptive parents tell him. And he never will be. But if he isn't a real Avery, then who is he? Born out of wedlock to a teenage girl cast out from her rural Irish community and adopted by a well-to-do if eccentric Dublin couple via the intervention of a hunchbacked Redemptorist nun, Cyril is adrift in the world, anchored only tenuously by his heartfelt friendship with the infinitely more glamourous and dangerous Julian Woodbead.

When the call finally comes, my life as I know it is over—my job as a teacher, my marriage, my family are all gone. In a heartbeat, I’ve lost everything that ever mattered to me. All because of one secret and what someone thinks she saw....

West Yorkshire, 1926. After completing her training in Steeple Street, Agnes is looking forward to making her mark as the village's first district nurse, confident she can make a difference in the locals' lives. But when she arrives, she's treated with suspicion, labelled just another servant of the wealthy mine owners. The locals would much rather place their trust in the resident healer, Nella Black.

Matty has had to care for her three younger sisters ever since their mother’s death 10 years ago. She and the girls’ beloved father have worked hard to keep the family together, and now it’s time to celebrate as Matty turns 18. But their joy is short-lived when tragedy suddenly strikes and their father disappears on his way to London. The sisters have no way of knowing what has happened to him – only that he hasn’t returned home. With little money left they’re now forced to battle life’s misfortunes alone....

Susie did something that she knows she will always regret: giving her baby son up for adoption, to keep her infidelity secret from her family. Louise, Susie's daughter, feels the effects of that decision echoing down through the years - her mother has always been difficult, too strict with her but not strict enough with her sister, Grace, who is wild and out of control. And Danny, Susie's husband, adores her but has always sensed something wrong at the heart of their marriage.

It’s a warm, early summer’s evening, when Mia’s doorbell rings unexpectedly. She opens the door to see the silhouette of a teenage girl, standing in the shadow beyond the porch light - and in an instant, she realizes who it is. Daisy, the daughter she gave up as a baby. She says she has a terrible secret. And she believes the only person who can help her is Mia. Her birth mother. Mia, however, has secrets of her own. Ones that she is afraid to let Daisy or anyone else know.

For three young boys, Liam, Patrick, and Hugo, life in Ireland of the 1960s proves to be both idyllic and flawed. Living in close proximity but leading vastly different lives, the bonds of friendship bind these young men as they grow, dream, and navigate the storms of youth.

Liverpool, 1940. When her childhood sweetheart, Johnny, is killed in action, Maxine Grey loses more than her husband - she loses her best friend. Desperate to make a difference in this awful war, Maxine takes a nursing job at London’s St Thomas’ hospital. She takes comfort in the attentions of a handsome surgeon, but Edwin Blake isn’t all he seems. And as the Blitz descends on the capital, Maxine faces more heartache. When she returns to Liverpool, she harbours a secret.

Alex Lake’s day job is all about helping people, especially children. She cares about them passionately and does everything in her power to rescue them from those who mean them harm. When the case of three-year-old Ottilie Wade comes to her attention, Alex finds herself completely unable to detach from the child the way she should. She feels an overpowering need to make a real difference in little Ottilie’s life, but no one is prepared to believe that Ottilie is in danger.

Alice Lake has arrived in London from Liverpool to start her training as a District Nurse, but her journey has been far from easy. Her parents think that she should settle down and get married, but she has already had her heart broken once and isn’t about to make the same mistake again. Alice and her best friend, Edith, are based in the East End, but before they’ve even got their smart new uniforms on, war breaks out, and Hitler’s bombs are raining down on London.

It's an early autumn day like any other as Miles Avery drives his wife, Jacqueline, to the station. Nothing remarkable crops up in conversation, nor do either of them appear anything other than their normal selves. At the station, Jacqueline gets out, takes an overnight bag from the back seat, then turns towards the platforms. This is the last anyone sees of her. Three weeks later, Miles calls the police. Enquiries are made, but there is no evidence of her boarding a train, or even entering the station.

Lough Glass is at the heart and soul of the namesake town clinging to its shore. They say that if you go out on St. Agnes' Eve and look into the lake at sunset you can see your future. But beneath its serene surface, the lake harbors secrets as dark and unfathomable as the beautiful woman who walks beside its waters.