"The Riddle of the Sands" by using Erskine Childers is a classic espionage novel that unfolds in opposition to the backdrop of early twentieth-century Europe. The story follows Carruthers, a central authority professional in London, who is invited by using his pal Davies for a crusing experience along the German North Sea coast. Initially waiting for a leisurely tour, Carruthers quickly will become embroiled in a surprising internet of espionage and...