The Most Mysterious Bookshop in Paris

Details:

Hugo has led an exciting life as an FBI profiler and the United States embassy's head of security, but now he's ready to embrace a quieter existence as a bookseller in the Marais district of Paris. His former employer, however, has other plans for him. A prominent American citizen is the COO of a boutique chocolate emporium in Paris, where they've received a mysterious and threatening note.