Fall in Love with Me. Duvergier, #4

In Napoleonic Paris, amid imperial intrigues and wartime secrets, an English spy and the daughter of his enemy discover that love can be the greatest risk of all. Paris, 1810. Napoleon's Empire gleams in all its splendor, but beneath the glittering salons and military parades lies a web of intrigue and secrets. Julien Duvergier returns to France with the prestige of a nobleman restored and a fortune large enough to open the doors of high society.
To everyone, he appears to be a loyal son of the Empire, eager to reclaim his rightful place in his homeland. In secret, however, he is a spy in the service of England, with a single mission: to watch the enigmatic Marshal Étienne de Villiers, a powerful man in control of the northern strategic routes and suspected of hiding dark ambitions behind his Napoleonic fervor. In the midst of that mission, he meets Angélique de Villiers, the marshal's daughter.
Scorned by her family and passionate about botany and natural medicine, Angélique had never truly felt seen, until Julien arrived. Their conversations about plants and healing remedies awaken in her a tender love, and in him, a disquieting desire that threatens to shatter his carefully constructed façade. What begins as a game of appearances soon becomes an undeniable attraction. But truth carries a devastating price: when Angélique discovers that the man who made her feel loved used her as part of his mission, the betrayal will wound her more deeply than her family's neglect ever did.
Caught between duty and love, between loyalty and betrayal, Julien and Angélique must fight against the forces determined to tear them apart. For in a Paris ruled by the Empire's ambition, loving the enemy will be the greatest risk of all.