From the author of Death on the Lusitania and The Spies of Hartlake Hall comes a gripping historical mystery of betrayal and high-level conspiracy set during the most important seventy-two hours in human history.

November 1918. At a railway siding in a forest near Compiègne, north of Paris, a momentous meeting is about to take place. Delegations from the German government and the Allies have arrived to negotiate the end to the Great War.

But extremists on both sides have other plans, and when Major Antoine Bloch of the French secret service is attacked and left for dead, his British counterpart, Patrick Gallagher, finds himself in a race against time to discover the culprit.

The stakes could not be higher; the Allies have given the Germans three days to agree to the armistice terms. If Gallagher cannot expose the traitors on both sides in that time, the war will continue and thousands more lives will be lost . . .