This American fiction written in 1915 tells the World War I adventure of Cyril Hammersley and his fiancée, an American woman by the name of Doris Mather. Cyril's father was English, and his mother was Prussian, and it makes it difficult to figure out which country earns his loyalty in this conflict. He is constantly viewed with suspicion by almost all of the people in his social circle because he appears to be doing nothing at all, not even caring about what is occurring around him. Even his fiancée Doris doubts Cyril and pushes him time and time again to do something and care about what's happening. This exciting work contains spies and counterspies, encoded messages, confidential meetings, and a wonderful giant plane known as "The Yellow Dove". The tension built at the beginning of the novel remains till the end, which keeps the reader hooked throughout the story. This is an exciting work, considered very convenient for the public, and was most certainly intended to inspire as well as amuse the readers.