In the third instalment of the K-Twelve Legacy Series, a new political landscape has emerged from the dust left by the Great War. However, old wounds still served to fuel hatred and a new, more dangerous foe has arisen from the ashes - The Nazis.

New organisations are formed to combat this new threat but the old guard, in the form of the Office of Special Projects, are still there. Colonel John Forrester is at a crossroads, his most trusted operative, Jonathan Fallon, has retired, leaving the K-12 post vacant. Many have come forward and many have fallen.

It is March 1942. Deep in occupied France, an agent for the Special Operations Executive is on the run for his life. He has vital information about the goings on at a nearby chateau and must inform his superiors back in Britain. He manages to get his hands on a radio set and begins to transmit, but is killed before he could finish.

What has startled this agent so much to make him break his cover and give his life to pass this information on? John Forrester and the OSP are tasked with finding the answer, but who can he assign to the mission? A new breed of man steps forward, somehow different but also the same. His name... FALLON