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.

When Juliet Porter’s mother dies, she leaves Juliet some old letters and a photograph which shatter all her previously-held beliefs. They show that her real father was an American bomber pilot in the second world war, some 40 years before, and that he had met her mother while serving in England. Armed only with this photo, Juliet sets out to trace her real father, and eventually finds the airfield where he served.

Jane Hadley has nothing to lose when she runs away to join the Women's Auxiliary Air Force. Whatever faces her in war-torn London can't be any worse than staying at home with her abusive father. The city is nothing like she could have imagined, but she's soon on the move, travelling from base to base for her top-secret training. Making plenty of friends along the way, it doesn't take long for Jane to embrace her growing confidence - especially under the attentive eye of dashing Officer Oscar Stanton.

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.

1941. The Blitz rages over London. And even in Cornwall, the war is being fought. When Violet loses her sister in the Blitz, she must take her nieces to safety in Cornwall. On the coast, she meets carefree chorus girl Eva, who is also running from the dangers of London. But Porthcurno hides a secret military base, and soon Violet and Eva realise there’s a battle to fight in Cornwall, too. Together with local Hazel, who works on the base, they must come together to help the war effort. But will their friendship be enough to keep them safe?

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.

London, 1941. The Blitz. When a Royal Navy memo arrives at head office, requesting female recruits to sign up as motorcycle dispatch riders, delivering highly classified orders across the country, three women jump at the chance to sign up for the most dangerous jobs in London.

Flying instructor Ellie Simpson has grown up a tomboy. She's never had an interest in the latest fashions or finding a husband; her only passion is flying her beloved Tiger Moth. But when war is declared, she is no longer be able to do what she loves most - fly.

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.

Bristol, 1939. School leaver Maisie Miles suspects her father, a small-time crook, has an ulterior motive for insisting she gets a job at the W. D. & H. O. Wills tobacco factory but keeps it to herself. She's befriended by effervescent Phyllis Mason and kind-hearted Bridget Milligan who take pity on her and take Maisie under their wing. But beneath their happy-go-lucky exteriors, they all harbour dreams and worries about what the future holds.

Sicily, 1943. Three American women, all nurses in the Medical Air Evacuation Transport Squadron, are determined to do all they can for their country. Vita is fun-loving, Dot shy and sweet-natured, and Evelyn practical and determined, but for all their differences, a life of military service pulls the three together as firm friends. When they’re selected for a daring mission, the women are proud to play their part. But disaster strikes when their plane crash-lands behind enemy lines in occupied Albania. finally find their way home?

1940: When the island of Guernsey is invaded by the Nazis, two sisters are determined to rebel in any way they can. But when forced to take in a German soldier, they are shocked to find a familiar face on their doorstep. 2016: Two generations later, Lucy returns to Guernsey after the death of a distant cousin. As she prepares the old family house for sale, Lucy discovers a box of handwritten notes, one word standing out: resistance. Lucy’s search for the author will uncover the story of a forgotten sister who vanished from the island one night, never to be seen again.

Berlin, 1941: Margarete Rosenbaum is working as a housemaid for a senior Nazi officer when his house is bombed, leaving her the only survivor. But when she’s mistaken for his daughter in the aftermath of the blast, Margarete knows she can make a bid for freedom.... Issued with temporary papers - and with the freedom of not being seen as Jewish - a few hours are all she needs to escape to relative safety. That is, until her former employer’s son, SS officer Wilhelm Huber, tracks her down.

In 1944, British bomber pilot Hugo Langley parachuted from his stricken plane into the verdant fields of German-occupied Tuscany. Badly wounded, he found refuge in a ruined monastery and in the arms of Sofia Bartoli. But the love that kindled between them was shaken by an irreversible betrayal. Nearly 30 years later, Hugo's estranged daughter, Joanna, has returned home to the English countryside to arrange her father's funeral. Among his personal effects is an unopened letter addressed to Sofia. In it is a startling revelation.

On a cold and snowy night in 1910, Ursula Todd is born to an English banker and his wife. She dies before she can draw her first breath. On that same cold and snowy night, Ursula Todd is born, lets out a lusty wail, and embarks upon a life that will be, to say the least, unusual. For as she grows, she also dies, repeatedly, in a variety of ways, while the young century marches on towards its second cataclysmic world war.