Dame Agatha Mary Clarissa Christie, Lady Mallowan,  (nee Miller; 15 September 1890 - 12 January 1976) was an English writer. She is known for her 66 detective novels and 14 short story collections, particularly those revolving around her fictional detectives Hercule Poirot and Miss Marple. Christie also wrote the world's longest-running play, a murder mystery, The Mousetrap, and six romances under the name Mary Westmacott. In 1971 she was appointed a Dame Commander of the Order of the British Empire (DBE) for her contribution to literature.
Critical reception and legacy
Christie had long been a fan of detective novels, having enjoyed Wilkie Collins's The Woman in White and The Moonstone, as well as Sir Arthur Conan Doyle's early Sherlock Holmes stories. She wrote her own detective novel, The Mysterious Affair at Styles, featuring Hercule Poirot, a former Belgian police officer noted for his twirly large "magnificent moustaches" and egg-shaped head. Poirot had taken refuge in Britain after Germany invaded Belgium. Christie's inspiration for the character stemmed from real Belgian refugees who were living in Torquay and the Belgian soldiers whom she helped treat as a volunteer nurse in Torquay during the First World War.  Agatha began working on The Mysterious Affair at Styles in 1916, writing most of it on Dartmoor. Her original manuscript was rejected by such publishing companies as Hodder and Stoughton and Methuen. After keeping the submission for several months, John Lane at The Bodley Head offered to accept it, provided that Christie change the ending. She did so, and signed a contract which she later felt was exploitative. It was finally published in 1920.  Christie, meanwhile, settled into married life, giving birth to her only child, daughter Rosalind Margaret Hicks, in August 1919 at Ashfield, where the couple spent much of their time, having few friends in London. Archie left the Air Force at the end of the war and started working in the City financial sector at a relatively low salary, though they still employed a maid.  Christie's second novel, The Secret Adversary (1922), featured a new detective couple Tommy and Tuppence, again published by The Bodley Head. It earned her PS50. A third novel again featured Poirot, Murder on the Links (1923), as did short stories commissioned by Bruce Ingram, editor of The Sketch magazine. In order to tour the world promoting the British Empire Exhibition, the couple left their daughter Rosalind with Agatha's mother and sister. They travelled to South Africa, Australia, New Zealand, and Hawaii.  They learned to surf prone in South Africa; then, in Waikiki, they were among the first Britons to surf standing up.  Christie occasionally inserted stereotyped descriptions of characters into her work, particularly before the end of the Second World War (when such attitudes were more commonly expressed publicly), and particularly in regard to Italians, Jews, non-Europeans, and sometimes Americans, the last usually as impossibly naive or uninformed. For example, she described "Hebraic men with hook-noses wearing rather flamboyant jewellery" in the first editions of the collection The Mysterious Mr Quin (1930), in the short story "The Soul of the Croupier"; in later editions, the passage was edited to describe "sallow men" wearing same.  In The Hollow, published as late as 1946, one of the more unsympathetic characters is "a Whitechapel Jewess with dyed hair and a voice like a corncrake ... a small woman with a thick nose, henna red and a disagreeable voice". To contrast with the more stereotyped descriptions, Christie sometimes showed "foreigners" as victims or potential victims at the hands of English malefactors, such as, respectively, Olga Seminoff (Hallowe'en Party) and Katrina Reiger (in the short story "How Does Your Garden Grow?"). Jewish characters are often seen as un-English (such as Oliver Manders in Three Act Tragedy), but they are rarely the culprits.  Often, she is affectionate or teasing with her prejudices. After four years of war-torn London, Christie hoped to return some day to Syria, which she described as "gentle fertile country and its simple people, who know how to laugh and how to enjoy life; who are idle and gay, and who have dignity, good manners, and a great sense of humour, and to whom death is not terrible."  She had trouble with an incompetent Swiss French nursery helper (Marcelle) for toddler Rosalind, and as a result she decided, "Scottish preferred ... good with the young. The French were hopeless disciplinarians ... Germans good and methodical, but it was not German that I really wanted Rosalind to learn. The Irish were gay but made trouble in the house; the English were of all kinds".  Often referred to as the "Queen of Crime" or "Queen of Mystery", Agatha Christie is the world's best-selling mystery writer and is considered a master of suspense, plotting, and characterisation. Some critics, however, have regarded Christie's plotting as superior to her skill with other literary elements. Novelist Raymond Chandler criticised her in his essay "The Simple Art of Murder", and American literary critic Edmund Wilson was dismissive of Christie and the detective fiction genre generally in his New Yorker essay, "Who Cares Who Killed Roger Ackroyd?"  In honour of the 125th anniversary of her birth, 25 contemporary mystery writers and one publisher revealed their views on Christie's works. Many of the authors read Christie's novels first, before other mystery writers, in English or in their native language, influencing their own writing, and nearly all still view her as the "Queen of Crime", and creator of the plot twists used by mystery authors. Nearly all had one or more favourites among Christie's mysteries, and find her books good to read now, nearly 100 years after her first novel was published. Several of the authors would be very pleased to have their own novels in print in 100 years. Just one of the 25 authors held with Edmund Wilson's views. Harper Collins also published a souvenir magazine Shocking Real Murders: Behind Her Classic Mysteries.  The Guinness Book of World Records lists Christie as the best-selling novelist of all time. Her novels have sold roughly 2 billion copies, and her estate claims that her works come third in the rankings of the world's most-widely published books, behind only Shakespeare's works and the Bible. Half of the sales are of English language editions, and the other half in translation. According to Index Translationum, she remains the most-translated individual author - having been translated into at least 103 languages. And Then There Were None is Christie's best-selling novel, with 100 million sales to date, making it the world's best-selling mystery ever, and one of the best-selling books of all time.  In 2012, Christie was among the British cultural icons selected by artist Sir Peter Blake to appear in a new version of his most famous artwork - the Beatles' Sgt. Pepper's Lonely Hearts Club Band album cover - to celebrate the British cultural figures of his life that he most admires.

Q: What is Agatha's legacy?
A: The Guinness Book of World Records lists Christie as the best-selling novelist of all time.
What is the name of one of her famous novels?
Agatha began working on The Mysterious Affair at Styles in 1916,
Agatha began working on The Mysterious Affair at Styles in 1916,