Louisa Adair, newly orphaned and shunned for her mixed-race heritage, has come here to the edge of the world to look after an old lady with a dark past.

Jamie Beaufort-Stuart is a flight lieutenant whose squadron is posted to the airfield over winter. Ellen McEwan is a young woman held hostage by the German pilot who lands at Windyedge one wild stormy night carrying a terrible secret. Three young people desperate to make a difference in a war that has decimated their families, friends and country.

When the means to change the course of history falls into their hands, how will they use it?