"Aurelius Smith, the well-known detective, here undertakes to discover why for nine years, Ann, an extraordinarily beautiful young woman, has shown absolute indifference to the world. This deep mystery reaches back to her Red Cross Service in France. In tracing its threads Smith finds that the murder of an Englishman in Ann's Park Avenue home vitally concerned England and that the nation-wide strike and disaster to England could be thwarted by a document in the possession of Ann's unknown lover."