Mr. Le Queux breaks all records for speed and thrills. And he tells you, too, about orosin, that newly discovered poison, a drop of which, on cigar or cigarette, renders the smoker unconscious. A gripping detective and mystery story. Every page presents a baffling situation, and all lead to the most unusual climax of the times.

William Tufnell Le Queux was an Anglo-French journalist and writer. He was also a diplomat (honorary consul for San Marino), a traveller (in Europe, the Balkans and North Africa), a flying buff who officiated at the first British air meeting at Doncaster in 1909, and a wireless pioneer who broadcast music from his own station long before radio was generally available; his claims regarding his own abilities and exploits, however, were usually exaggerated. His best-known works are the anti-French and anti-Russian invasion fantasy The Great War in England in 1897 (1894) and the anti-German invasion fantasy The Invasion of 1910 (1906), the latter becoming a bestseller.