Sir Walter Bullivant up. In the first chapter of the novel, the reader also learns of Bullivant's son Harry Bullivant, who lost his life while spying in the Middle East in the guise of a muleteer. Sir Walter Bullivant Sir Walter Bullivant is a fictional character created by the Scottish thriller writer John Buchan for his series of novels featuring the spy Richard Hannay. He plays small but significant roles in both "The Thirty-Nine Steps" and "Greenmantle". Sir Walter is a senior mandarin at the Foreign Office in the years leading up to World War I. He is the archetypal spymaster — gruff,
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