London 1941. Sirens warn of danger as German bomber planes approach the city. Ever cautious, Kathy and her mother head immediately for the nearest public air raid shelter, and when the building is destroyed in a direct hit, it is a miracle Kathy survives. Finding herself alone, Kathy is left with nothing but a burning fury and a determination to join the war effort.

October 1943. Nancy Dalton, working at the RAF base at Scampton in Lincolnshire, has been holding vigil for the Lancaster bomber pilots whose missions seem endless. But her watchfulness has not prevented her own pilot brother from failing to return. In the midst of mourning him, fresh recruits arrive to continue the war effort, among them charismatic Canadian Steve Allard. The months ahead will be long and hard, with danger a constant companion, and although both Steve and Nancy never intend to complicate wartime life with romance, their attraction becomes impossible to ignore.

In a different world, Evie Milton would have accepted her fate, married an aristocrat and become the doyenne of one of England’s finest estates, just like her mother. In a different world, Rose Wiley would have married her fiancé, David, established a modest homestead and brought up a brood of babies, just like her mother. But this isn’t a different world, and these women are not their mothers. Rose dreams of a life filled with more than family and duty to her husband—a life of purpose—and Evie dreams of a life far away from her rarefied existence.

In the summer of 1940, ambitious young American journalist Ruby Sutton gets her big break: the chance to report on the European war as a staff writer for Picture Weekly newsmagazine in London. She jumps at the chance, for it's an opportunity not only to prove herself, but also to start fresh in a city and country that know nothing of her humble origins. But life in besieged Britain tests Ruby in ways she never imagined.

1939 - American heiress Vivi Miles falls for naval officer Nathan as soon as she arrives in England. And, under the threat of war, they marry in a whirlwind before he leaves to join his ship. When Nathan returns from Dunkirk injured, he is distant, aloof, and no longer the man Vivi fell in love with. But it’s not just because of his brutal experiences of war. Nathan has a secret and Vivi suspects it’s linked to the mysterious evacuee at the secluded house in the woods on his Kent estate.

Lady Joanna Harcourt and her daughter, Sarah, discover their life of luxury at Goodwill House is over. Because with Lord Harcourt away fighting, the Harcourt girls are facing financial ruin. Lady Joanna is terrified of losing their home, but for Sarah, this means her dreams of becoming a doctor are over. Headstrong Sarah isn’t one to quit! War or not, she’s determined to find a way to save her home and follow her dreams - whatever it takes.

September 1939. London is in blackout; war has been declared, but Dulcie Treadwell can think only of her heartbreak over American broadcaster, Glenn Reeves, who didn’t say goodbye before leaving for Berlin. Posted to Bletchley Park, Dulcie must concentrate on helping the war effort by cracking the German Enigma codes. The hours are long and the conditions tough, with little recognition from above. Until she breaks her first code. Dulcie finally settles into something she was born to do. But just as she’s proving her worth, a shocking betrayal leads to Dulcie’s brutal dismissal.

It is 1939, and working-class Evie Bishop has received a scholarship to study mathematics at Oxford when tragedy turns her life upside down. Evie must seek a new future for herself and, inspired to contribute to the war effort, joins the Women’s Auxiliary Air Force as an Ops Room plotter. Posted to a fighter station on the Sussex Coast, Evie befriends two other WAAFs. But the German bombers seem to know more than they should about the base’s operations, and soon Evie, May and Jess are caught up in a world more dangerous than they ever imagined.

At the heart of Dover's Market Square lies the Castle's Café. A bustling, homely place run by the formidable Nellie Castle and her six children. Since the scandalous birth of her beloved son 10 years before, Marianne, Nellie's eldest daughter, has preferred to stay in the kitchen, hidden away from the town gossips. Overcome with shame, Marianne has never revealed the name of Donny's father - not even to her own mother. But with World War II just around the corner, Marianne's past catches up with her. And suddenly the lives of the Castle family become a lot more complicated.

Following a humiliating experience involving the man she thought she’d marry, Iris Tredwick signs up to the Wrens in order to escape and - hopefully - find ‘the right sort’ of man to please her mother. After a bumpy start, Iris manages to befriend outspoken Mary and dreamer Sally as they are sent to their first posting - in Orkney. There she meets engineer Rob, whose flirtatious nature both charms and confounds straight-laced Iris. Much more appropriate for her is local doctor Stewart, if only she felt the same spark for him as she does for Rob.

Rhoda Middleton suspects her husband Peter is having an affair. But when Rhoda tracks the mysterious woman down, she finds she is not his lover after all, but the wife of his wartime best friend, Archie Foster. There is only one problem - Rhoda has never even heard of Archie Foster.

It's the spring of 1924, and Lady Helena Montagu-Douglas-Parr has just arrived in France. On the mend after a near-fatal illness, she is ready to embrace the restless, heady allure of the City of Lights. Her parents have given her one year to live with her eccentric aunt in Paris, and Helena means to make the most of her time. She's quickly drawn into the world of the Lost Generation and its circle of American expatriates, and, with their encouragement, she finds the courage to pursue her dream of becoming an artist.

In 1914, Britain faces a new kind of war. For Edward and Beatrice Hunter, their children, servants and neighbours, life will never be the same again. For David, the eldest, war means a chance to do something noble; but enlisting will break his mother's heart. His sister Diana, nineteen and beautiful, longs for marriage. She has her heart set on Charles Wroughton, son of Earl Wroughton, but Charles will never be allowed to marry a banker's daughter.

Audrey Parker's life changes forever when Pearl Harbor is attacked on December 7, 1941. Her brother, a talented young Navy pilot, had been stationed there, poised to fulfill their late father's distinguished legacy. Fresh out of nursing school with a passion and a born gift for helping others, both Audrey and her friend, Lizzie, suddenly find their nation on the brink of war. Driven to do whatever they can to serve, they enlist in the Army and embark on a new adventure as flight nurses.

London, 2004. Frankie didn't always have it easy. Growing up motherless, she was raised by her grandmother, who loved her - and betrayed her. For years, the rift between them seemed irreparable. But when their paths suddenly cross again, Frankie is shocked to realise that her grandmother is slowly losing control of her memory. There is a darkness in her past that won't stay buried - secrets going back to wartime that may have a devastating effect on Frankie's own life.