It is 1795, and a young woman named Mary Finch travels in haste to the Suffolk coast to meet her wealthy uncle, and end a long family estrangement. But before she reaches her destination she discovers a dying man on the road...

Spring 1797. The war with France deepens, the Channel Fleet has mutinied... and a ruthless traitor lurks within fashionable London society. Such matters should not concern young Mary Finch...

With Napoleon's forces sweeping through Europe, a young Englishwoman travels to Paris, risking her life on a secret assignment that may buy Britain vital time...