Carruthers is looking forward to a relaxing holiday when he sets off for the Baltic Sea. Instead he finds himself at the centre of a complicated and deadly plot. Will Carruthers and his friend Arthur Davies discover why the sinister and mysterious Herr Dollman is so interested in their little yacht, the Dulcibella? What does Clara Dollman know about her father's plans? Some secret scheme has brought Commander von Brüning of the Imperial German Navy to the East Frisian Islands. Can Carruthers and Davies solve the riddle of the sands? are retellings of great literature from around the world, each fitted into a 64-page book. Our books make classic stories, dramas and histories available to intelligent young readers as a bridge to the full texts, to language students wanting access to other cultures, and to adult readers who are unlikely ever to read the original versions.