The Winking Ruby Mystery

When a mysterious violinist utters a cryptic plea before falling into a coma, sisters Jean and Louise Dana are launched into their first European adventure. They must quickly decipher the meaning of 'winking ruby' to save a life, all while danger follows them across the Atlantic. As they investigate, they uncover a family driven into hiding by blackmail and become entangled in a frightening mystery that leads them to a fabulous crimson gem.