Georgette Heyer was a prolific historical romance and detective fiction novelist. Her writing career began in 1921, when she turned a story for her younger brother into the novel The Black Moth. In 1925 she married George Ronald Rougier, a mining engineer. Rougier later became a barrister and he often provided basic plot outlines for her thrillers. Beginning in 1932, Heyer released one romance novel and one thriller each year. Heyer was an intensely private person who remained a best selling author all her life without the aid of publicity. She made no appearances, never gave an interview and only answered fan letters herself if they made an interesting historical point. She wrote one novel using the pseudonym Stella Martin. Her Georgian and Regencies romances were inspired by Jane Austen. While some critics thought her novels were too detailed, others considered the level of detail to be Heyer's greatest asset. Heyer remains a popular and much-loved author, known for essentially establishing the historical romance genre and its subgenre Regency romance.

Alan Alexander Milne (pronounced /ˈmɪln/) was an English author, best known for his books about the teddy bear Winnie-the-Pooh and for various children's poems. A. A. Milne was born in Kilburn, London, to parents Vince Milne and Sarah Marie Milne (née Heginbotham) and grew up at Henley House School, 6/7 Mortimer Road (now Crescent), Kilburn, a small public school run by his father. One of his teachers was H. G. Wells who taught there in 1889–90. Milne attended Westminster School and Trinity College, Cambridge, where he studied on a mathematics scholarship. While there, he edited and wrote for Granta, a student magazine. He collaborated with his brother Kenneth and their articles appeared over the initials AKM. Milne's work came to the attention of the leading British humour magazine Punch, where Milne was to become a contributor and later an assistant editor. Milne joined the British Army in World War I and served as an officer in the Royal Warwickshire Regiment and later, after a debilitating illness, the Royal Corps of Signals. He was discharged on February 14, 1919. After the war, he wrote a denunciation of war titled Peace with Honour (1934), which he retracted somewhat with 1940's War with Honour. During World War II, Milne was one of the most prominent critics of English writer P. G. Wodehouse, who was captured at his country home in France by the Nazis and imprisoned for a year. Wodehouse made radio broadcasts about his internment, which were broadcast from Berlin. Although the light-hearted broadcasts made fun of the Germans, Milne accused Wodehouse of committing an act of near treason by cooperating with his country's enemy. Wodehouse got some revenge on his former friend by creating fatuous parodies of the Christopher Robin poems in some of his later stories, and claiming that Milne "was probably jealous of all other writers.... But I loved his stuff." He married Dorothy "Daphne" de Sélincourt in 1913, and their only son, Christopher Robin Milne, was born in 1920. In 1925, A. A. Milne bought a country home, Cotchford Farm, in Hartfield, East Sussex. During World War II, A. A. Milne was Captain of the Home Guard in Hartfield & Forest Row, insisting on being plain 'Mr. Milne' to the members of his platoon. He retired to the farm after a stroke and brain surgery in 1952 left him an invalid and by August 1953 "he seemed very old and disenchanted". He was 74 years old when he passed away in 1956.

Agatha Christie is the top-selling author of all time, with a legacy spanning 66 crime novels, 14 plays, and six romance novels under a pseudonym. Her works have sold over two billion copies globally, translated into at least 103 languages, making her the most translated author. She introduced the world to iconic characters Hercule Poirot and Miss Jane Marple, and wrote *The Mousetrap*, the record-holding longest-running play in modern theater. The youngest in the Miller family, her experience as a nurse during WWI and later roles in pharmacies during both World Wars deeply influenced her mystery novels, often featuring poisons. Christie’s writing career launched in 1920 with *The Mysterious Affair at Styles*. Her life was as captivating as her fiction, notably her 1926 disappearance after her first husband’s affair became public, sparking a nationwide search. Christie's second marriage to archaeologist Max Mallowan enriched her life and work, with travels and homes like the Greenway Estate and Abney Hall providing settings for several novels. Her marriage to Mallowan lasted until her death in 1976. Christie's contributions to literature earned her the title Commander of the Order of the British Empire, solidifying her place in literary history.