From Norfolk to Normandy - a family goes to war.

The 16-year old twins, David and Emma, in the carefree world of the mid-30s, joke about becoming spies.

To Commander Gregory, head of what will become the SOE, espionage is no joke, and he already has his eye on them.

Despite strong opposition from their father, they, their younger brother, James, and their Belgian friend, Nicole, become major players on the great stage that was the Second World War.

Life becomes a stampeding kaleidoscope of horrific hardship and imminent danger; of incredible courage and unbelievable achievement, of daily death and ghastly disfigurement, of diabolical atrocity and incredible political stupidity... and of moments of incredible joy and of hot, despairing tears.