The Willing Resistance, The Traveling Companion, Book 2

Justice has a new destination.
When Inspector Henri Toussaint retreats to the Haute-Pyrénées to recover from his war wounds, he expects peace—not murder. A fatal struggle in the moonlight draws him into a tangle of smuggling, secrets, and betrayal stretching from France to Spain.
At the heart of it all stands Elize Belfort—the woman he once loved and believed dead—and Penny Tompkins, the British assassin whose missions never end quietly. Together, they must uncover who profits from the chaos before the next body falls.
But trust is a luxury none of them can afford.
From the author of The Innocent Assassin comes a taut, romantic espionage tale where the war is over, but the reckoning has just begun.