arthur captain(fictitiouscharacter) classifieddefenseinformation classifieddefenseinformationinfiction detective england ficción fiction general hastings hercule(fictitiouscharacter) hercule(personajeliterario) herculepoirot(fictitiouscharacter) largetypebooks mystery novelademisterio novelapolicíaca openlibrarystaffpicks poirot policeprocedural privateinvestigators privateinvestigatorsinfiction romanpolicier traditional