A World War I tale of espionage in a fictional "backwater" area in England with no apparent military value called Dreymarsh. The story begins with Dreymarsh residents discovering an observation car from a German zeppelin along with a Homburg hat near Dreymarsh. This discovery triggers a range of events and introduces a myriad of characters which all make for a rather delightful mystery. Oppenheim was famous for his hundreds of spy and espionage novels...