Apr 1914 - 18 Sep 1914Spring 1914. At a masked ball, the Duke de Richleau has an intriguing meeting with a beautiful woman.An incident that was to lead the Duke into a series of desperate adventures as he became involved, firstly with The Black Hand, a Serbian, secret, terrorist society, and then, as a British secret agent, at the Austrian Supreme Headquarters.Finally, at the Kaiser's headquarters, he was to take a hand in the Battle of the Marne – the operation that shattered Germany's chance of victory.And through the violence, intrigue and hair's-breadth escapes, there runs also the story of a great love.