In 1938, Jewish families are scrambling to flee Vienna. Desperate, they take out advertisements offering their children into the safe keeping of readers of a British newspaper, the Manchester Guardian. The right words in the right order could mean the difference between life and death.

83 years later, Guardian journalist Julian Borger comes across the ad that saved his father, Robert, from the Nazis. Robert had kept this a secret, like almost everything else about his traumatic Viennese childhood, until he took his own life. Drawn to the shadows of his family's past and starting with nothing but a page of newspaper ads, Borger traces the remarkable stories of his father, the other advertised children, and their families, each thrown into the maelstrom of a world at war.

From a Viennese radio shop to the Shanghai ghetto, internment camps and family homes across Britain, the deep forests and concentration camps of Nazi Germany, smugglers saving Jewish lives in Holland, an improbable French Resistance cell, and a redemptive story of survival in New York, Borger unearths the astonishing journeys of the children at the hands of fate, their stories of trauma and the kindness of strangers.