Wikipedia page about this book: https://fr.wikipedia.org/wiki/Anatole_(roman)

Release date is 2011-01-31

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"Anatole, Vol. 2" by Sophie Gay is a novel published in 1815. In the glittering high society of Napoleonic Paris, the young and beautiful widow Valentine de Saverny becomes captivated by a mysterious stranger who saves her from danger but refuses to reveal his identity. While other suitors pursue her openly, Anatole can only express his devotion through anonymous letters and secret gestures. As their silent romance deepens, Valentine must navigate jealous rivals and social intrigue, unaware that a shocking secret surrounds her elusive savior—one that will test the very limits of her love. (This is an automatically generated summary.)

Original publication data not identified