The announcement of the publication of these stories in the "Blue Book" had been made as far back as November 1925 when, at the end of their publication of "The Lemesurier Inheritance", the editors announced, "Further stories by Agatha Christie, who is firmly established in the front line of writers of mystery and detective tales, will appear in forthcoming issues of "The Blue Book Magazine". Watch for "The Big Four"." The reason for the eventual delay in publication is not known.