" Germans fell silent, watching her, moving sideways to let her pass. Isabelle heard one of them say “mannish” and another “widow.” Anouk seemed not to notice them at all. At the counter she stopped and took a long drag on her cigarette. The smoke blurred her face, and for a moment, only her cherry-red lips were noticeable. She reached down for her handbag and withdrew a small brown book. The author’s name—Baudelaire—was etched into the leather, and although the surface was so scratched and worn and discolored the title was impossible to read, Isabelle knew the volume. Les Fleurs du mal. The Flowers of Evil. It was the book they used to signal a meeting. “I am looking for something else by this author,” Anouk said, exhaling smoke. “I am sorry, Madame. I have no more Baudelaire. Some Verlaine, perhaps? Or Rimbaud?” “Nothing then.” Anouk turned and left the bookshop. It wasn’t until the bell tinkled that her spell broke and the soldiers began speaking again. When no one was looking, Isabelle palmed the small volume of poetry. Inside of it was a message for her to deliver, along with the time it was to be delivered. The place was as usual: the bench in front of the Comédie Française "

― Kristin Hannah , The Nightingale