Richard Hannay returns to the front lines and participates in desperate fighting following the Germans' massive, last-ditch effort to win the war. Soon after the end of the war, Hannay marries Mary Lamington, and the following year they have a son, Peter John Hannay. The boy is named after Hannay's two great friends John Scantlebury Blenkiron (an American businessman and spy who had often helped him) and Peter Pienaar ("Mr Standfast"), an old Boer scout who seems to have been a kind of father-figure to him. The family settles in Mary's old home in the Cotswolds, Fosse Manor, Oxfordshire and Hannay (now
Richard Hannay a KCB) finds peace and enjoyment as a farmer. However, in 1920 or 1921, Hannay again finds himself in an adventure, this time with his wife's help unravelling a kidnapping mystery in "The Three Hostages". His last adventure, "The Island of Sheep", occurs some 12 years later when Hannay, now in his fifties, is called by an old oath to protect the son of a man he once knew, who safeguards the secret of the greatest treasure on earth. This book also focuses on Hannay's son, Peter John, now a bright but solemn teenager. Though the Hannay books stop short