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.

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.

On the eve of a world war, a forbidden love will blossom in the garden of a stately home, where one young woman will make a choice that will change her life forever. As the storm clouds of war gather, Cordelia seeks refuge in the grounds of her family estate. Handsome landscaper Isaac has recently arrived to tend to the gardens, and the connection between him and Cordelia is as immediate as it is forbidden. Isaac begins to secretly teach her how to cultivate the gardens, so when he and all the young men are called away to war, Cordelia takes over.

As war looms in Europe, 18-year-old Jane Shaw runs the household as an unpaid servant on a meagre budget. When tragedy strikes and she loses her beloved younger brother in suspicious circumstances, Jane takes a position in service looking after Ned, a troubled young boy. Here she meets dashing David Heron, Ned's Uncle and they form an immediate attachment until she is dismissed after being accused of stealing a piece of jewellery. Returning home, Jane and her sister, Melia, are soon orphaned and left at the mercy of their Aunt Alice.

Germany, 1945. As the ground shakes and the air raid sirens wail, Katja holds her tiny baby to her chest. She pictures Karl’s handsome face and kind blue eyes, her breath catching at the thought of him heading back to the front. She must never tell anyone about the letters she delivered for him or the other secret she is hiding....

It is two years before the outbreak of World War 1, and the Oakley family are typical of their time. Andrew has been clerk at a City solicitors for twenty years. Alice, his wife, keeps the home fires burning. Their sons plan on becoming skilled apprentices. And Mabel, their daughter, says she would rather die than go into domestic service like her cousin. She is going to go to train as a secretary. Andrew Oakley little imagines, as he sets off for work one February morning, that their lives are about to change in the most dramatic and tragic fashion.

It’s the summer of 1919, and Ellen O’Brien has her whole life ahead of her. Young, in love and leaving home for her first job, the future seems full of shining possibility. But war is brewing, and before long, Ellen and everyone around her are swept up by it. As Ireland is torn apart by the turmoil, Ellen finds herself facing the ultimate test of love and loyalty. A hundred years later and Clare Farrell has inherited a dilapidated old farmhouse in County Meath.

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.

As Britain stands alone against a monstrous enemy, the inhabitants of Pearl Street face hardship and heartbreak with courage and humour. The war touches each of them in a different way: for Annie Poulson, a widow, it means never-ending worry when her twin boys are called up and sent to France; Sheila Reilly's husband, Cal, faces the terror of U-Boat attacks; Eileen Costello is liberated from a bitter, loveless marriage when her husband is sent to Egypt.

London, 1938: Lizzie Larch is a 20-year-old hat maker in London's east end. She is happy and popular, but she carries a secret. Seven years ago she was viciously attacked and recovered in a private sanatorium where she miscarried a child. Lizzie has no memory of the night of the attack, but secrets cannot stay secret for too long. When she starts courting her boss' nephew, a shocking revelation surfaces; threatening to destroy their new-found happiness.

Evacuated from Blitz-battered London, shy and genteel Elizabeth White is sent to stay with the boisterous O'Connors in Kilgarret, Ireland. It is the beginning of an unshakeable bond between Elizabeth and Aisling O'Connor, a friendship which will endure through 20 turbulent years of change and chaos, joy and sorrow, soaring dreams and searing betrayals.

Christmas is approaching on the island of Jersey, but Libby is feeling far from festive. Her police work and duties as vicar's wife weigh heavily on her, she's anxious about her troubled children, and now her best friend, Stella, has suddenly turned against her, citing a mysterious family grudge. Libby is devastated by Stella's unexpected coldness. But then her father shows her a diary written by her great-aunt Queenie, which sheds light on a long-hidden secret - one rooted in love, loyalty and betrayal.

London, 1940. Bombs fall and Josie Banks’ world crumbles around her. Her overbearing husband, Stan, is unreachable, called to service. Her home, a ruin of rubble and ash. Josie’s beloved tearoom boss has been killed, and Josie herself is injured, with nothing left and nowhere to go. Evacuated to the English countryside, Josie ends up at the estate of the aristocratic Miss Harcourt, a reluctant host to the survivors of the Blitz. Now a threat looms larger than anyone imagined. And a dangerous secret is about to upend Josie’s life again.

1940, Liverpool: Alice Turner and her best friend, Millie Markham, work for the war effort at Rootes munitions factory, making shell caps and Halifax bombers. Alice’s sweetheart, Terry, is home from the front for a brief period of leave. But the honeymoon is soon over. Terry must go back to the dangers of Nazi-occupied France, and the ever-present air raid sirens quickly bring Alice back down to earth.