It is said that a picture may be worth a thousand words, but an old photograph can inspire many more. In this beguiling book, Alexander McCall Smith casts his eye over five chanced-upon photographs from the era of black-and-white photography and imagines the stories behind them. Who were those people, what were their stories, why are they smiling, what made them sad?

England, 1959: Laurel Nicolson is 16 years old, dreaming alone in her childhood tree house during a family celebration at their home, Green Acres Farm. She spies a stranger coming up the long road to the farm and then observes her mother, Dorothy, speaking to him. And then she witnesses a crime.

At the age of 22, Jennifer Worth left her comfortable home to move into a convent and become a midwife in postwar London’s East End slums. The colorful characters she met while delivering babies all over London - from the plucky, warm-hearted nuns with whom she lived to the woman with 24 children who couldn't speak English to the prostitutes and dockers of the city’s seedier side - illuminate a fascinating time in history.

Set at the end of World War II, in a crumbling Bavarian castle that once played host to all of German high society, a powerful and propulsive story of three widows whose lives and fates become intertwined - an affecting, shocking, and ultimately redemptive novel from the author of the New York Times notable book The Hazards of Good Breeding.

In 1940, 18-year-old Juliet Armstrong is reluctantly recruited into the world of espionage. Sent to an obscure department of MI5 tasked with monitoring the comings and goings of British Fascist sympathizers, she discovers the work to be by turns both tedious and terrifying. But after the war has ended, she presumes the events of those years have been relegated to the past forever. Ten years later, now a radio producer at the BBC, Juliet is unexpectedly confronted by figures from her past. A different war is being fought now, but Juliet finds herself once more under threat.

Early 1900s London: Taken from his homeland, twelve-year-old Celestine spends most of the time locked away in the attic of a large house by the sea. The only time Celestine isn’t bound by confines of the small space is when he is acting as an unpaid servant to English explorer Sir Richard Babbington, As the years pass, he desperately clings on to memories of his family in Africa, even as he struggles to remember his mother’s face, and sometimes his real name . . .

1946, post-World War II, Hamburg: While thousands wander the rubble, lost and homeless, Colonel Lewis Morgan, charged with overseeing the rebuilding of this devastated city and the denazification of its defeated people, is stationed in a grand house on the River Elbe. He is awaiting the arrival of his wife, Rachael - still grieving for their eldest son - and their only surviving son, Edmund. But rather than force the owners of the house, a German widower and his rebellious daughter, out onto the streets, Lewis insists that the two families live together. In this charged atmosphere, both parents and children will be forced to confront their true selves....

The term "sleeping dictionary" was coined for young Indian women who slept with British men and educated them in the ways of India. Set between 1925 and the end of World War II, The Sleeping Dictionary is the story of Kamala, born to a peasant family in West Bengal, who makes her way to Calcutta of the 1930s. Haunted by a forbidden love, she is caught between the raging independence movement and the British colonial society she finds herself inhabiting.

1967. While London comes alive with the new youth revolution, the suburban Fischer family seems to belong to an older world of conventional stability: pretty, dutiful homemaker Phyllis is married to Roger, a devoted father with a career in the Foreign Office. Their children are Colette, a bookish teenager, and Hugh, the golden boy.

In the autumn of 1940, four children meet on a train. Behind them is London, under heavy aerial attack; ahead of them is a ship bound for the safe shores of Canada. Arthur has promised his mother not to let his little brother, Philip, out of his sight. Pippa and Dora are on their own: polar opposites, brought together by the adventure of a lifetime. But disaster strikes mid-Atlantic, and in the chaos one of the children makes a choice that will determine the course of their lives forever.

Mary Doyle arrives in Dublin in 1913, doomed, she fears, to a life of domestic service. Instead, however, she finds herself deeply affected by the social and political turmoil of a fledgling nation struggling for independence. Suddenly, all that was once inevitable is no longer a certainty as she is embroiled in the very heart of the Easter Rising.

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.

In the aftermath of the Great War and a devastating family tragedy, Laurence Bartram has turned his back on the world. But with a well-timed letter, an old flame manages to draw him back in. Mary Emmett's brother John - like Laurence, an officer during the war - has apparently killed himself while in the care of a remote veterans' hospital, and Mary needs to know why. What connects a group of war poets, a feud within Emmett's regiment, and a hidden love affair? Was Emmett's death really a suicide or the missing piece in a series of murders?

Coventry, 1939. Days before the outbreak of World War II, a terrorist bomb explodes on a busy street, killing and maiming innocent civilians. A man is hanged on the evidence given by a young witness. As time goes on, the witness doubts her recollection of events, but her testimony has already had far-reaching consequences. Over sixty years later, in the wake of the 7/7 London bombings, Sara returns to her childhood home to find that her sister, Polly, missing for more than ten years, has finally come back too.

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.