In the Interests of the Brethren: Foundations of Freemasonry Series: Masonic Fiction (Unabridged‪)‬

Brother Rudyard Kipling sets this fictional Masonic tale during World War I. A wealthy shop-keeper is running a Masonic lodge for traveling brothers from around the globe, most of whom are in and out of London, due to the war. Many can't be authenticated as Masons, but are permitted to sit in lodge, based on partial examinations and an overall gut feeling. The topic of what Grand Lodge would think about this comes up as an eventual conversation.