An atmospheric book cover for a thriller novel titled À l'ombre du monde. The setting is a mystical Greek island at night, under a starry sky, with a moonlit beach resembling Myrtos. In the foreground, a lone woman with wet hair stands on the shore, looking out into the dark ocean, with a sense of mystery and loss. The background includes faint shadows of secretive, cloaked figures, hinting at a secret society. The overall tone is dark, suspenseful, with shades of deep blue, silver, and black, and subtle golden accents to evoke an air of mysticism. The title À l'ombre du monde is displayed in bold, elegant serif typography, with the author’s name subtly below. The mood is both haunting and intriguing, inviting the viewer into a story of mystery and conspiracy.