Title: Twentieth-century English literature
Content:  Agatha Christie (1890–1976) was a crime writer of novels, short stories and plays, who is best remembered for her 80 detective novels as well as her successful plays for the West End theatre. Christie's works, particularly those featuring the detectives Hercule Poirot or Miss Marple, have given her the title "Queen of Crime", and she was one of the most important and innovative writers in this genre. Christie's novels include Murder on the Orient Express, Death on the Nile and And Then There Were None. Another popular writer during the Golden Age of detective fiction was Dorothy L. Sayers (1893–1957). Other 
Title: Agatha Christie
Content:  Dame Agatha Mary Clarissa Christie, Lady Mallowan, (née Miller; 15 September 1890 – 12 January 1976) was an English writer known for her 66 detective novels and 14 short story collections, particularly those revolving around fictional detectives Hercule Poirot and Miss Marple. She also wrote the world's longest-running play, The Mousetrap, which was performed in the West End from 1952 to 2020, as well as six novels under the pseudonym Mary Westmacott. In 1971, she was made a Dame (DBE) for her contributions to literature. Guinness World Records lists Christie as the best-selling fiction writer of all time, her novels having sold more than two 
Title: Agatha Christie bibliography
Content:  Agatha Christie (1890–1976) was an English crime novelist, short-story writer and playwright. Her reputation rests on 66 detective novels and 14 short-story collections that have sold over two billion copies, an amount surpassed only by the Bible and the works of William Shakespeare. Her works contain several regular characters with whom the public became familiar, including Hercule Poirot, Miss Marple, Tommy and Tuppence Beresford, Parker Pyne and Harley Quin. Christie wrote more Poirot stories than any of the others, even though she thought the character to be "rather insufferable". Following the publication of the 1975 novel Curtain, Poirot's obituary appeared on 
Title: Detective fiction
Content:  Agatha Christie is not only the most famous Golden Age writer, but also considered one of the most famous authors of all genres of all time. At the time of her death in 1976, “she was the best-selling novelist in history.” Many of the most popular books of the Golden Age were written by Agatha Christie. She produced long series of books featuring detective characters like Hercule Poirot and Miss Marple, amongst others. Her use of basing her stories on complex puzzles, “combined with her stereotyped characters and picturesque middle-class settings”, is credited for her success. Christie's works include Murder on the Orient Express (1934), Death on the Nile (1937), Three Blind Mice (1950) and And Then There Were None (1939).
Title: Agatha Christie
Content:  Agatha Christie: A Biography. London: HarperCollins. ISBN: 978-0-00-216330-9. Retrieved 8 March 2015. ; Prichard, Mathew (2012). The Grand Tour: Around The World With The Queen Of Mystery. New York, NY: HarperCollins. ISBN: 978-0-06-219122-9. ; Thompson, Laura (2008), Agatha Christie: An English Mystery, London: Headline Review, ISBN: 978-0-7553-1488-1. Morgan, Janet P. (1984). Agatha Christie: A Biography. London: HarperCollins. ISBN: 978-0-00-216330-9. Retrieved 8 March 2015. ; Prichard, Mathew (2012). The Grand Tour: Around The World With The Queen Of Mystery. New York, NY: HarperCollins. ISBN: 978-0-06-219122-9. ; Thompson, Laura (2008), Agatha Christie: An English Mystery, London: Headline Review, ISBN: 978-0-7553-1488-1. Thompson, Laura (2008), Agatha Christie: An English Mystery, London: Headline Review, ISBN: 978-0-7553-1488-1. Thompson, Laura (2008), Agatha Christie: An English Mystery, London: Headline Review, ISBN: 978-0-7553-1488-1. 
Title: Agatha Christie's fictional universe
Content:  ; The Big Four (1927 novel) ; Double Sin (1928 short story) ; Wasp's Nest (1928 short story) ; Alibi (1928 play) ; The Third Floor Flat (1929 short story) ; Black Coffee (1930 play) ; Peril at End House (1932 novel) ; The Mystery of the Bagdad Chest (1932 short story) ; Lord Edgware Dies (1933 novel) ; Murder on the Orient Express (1934 novel) ; Death in the Clouds (1935 novel) ; The A.B.C. Murders (1936 novel) ; Murder in the Mews (1936 novella) ; Triangle at Rhodes (1936 novella) ; Problem at Sea (1936 short story) ; Poirot and the Regatta Mystery (1936 short story) ; The Incredible Theft (1937 novella) ; Yellow Iris (1937 short story) ; The Dream 
Title: English novel
Content:  Rebecca, a mystery novel, in 1938 and W. Somerset Maugham (1874–1965) Of Human Bondage (1915), a strongly autobiographical novel, is generally agreed to be his masterpiece. In genre fiction Agatha Christie was an important writer of crime novels, short stories and plays, best remembered for her 80 detective novels and her successful West End theatre plays. Christie's novels include Murder on the Orient Express (1934), Death on the Nile (1937), and And Then There Were None (1939). Another popular writer during the Golden Age of detective fiction was Dorothy L. Sayers, while Georgette Heyer created the historical romance genre.
Title: Agatha Christie
Content: Curran, John (2009). Agatha Christie's Secret Notebooks: Fifty Years of Mysteries in the Making. London: HarperCollins. ISBN: 978-0-06-200652-3. ; Curran, John (2011). Agatha Christie: Murder in the Making. London: HarperCollins. ISBN: 978-0062065445. ; Curran, John. "75 facts about Christie". The Home of Agatha Christie. Agatha Christie Limited. Retrieved 21 July 2017. ; Gerald, Michael C. (1993). The Poisonous Pen of Agatha Christie. Austin, Texas: University of Texas Press. ISBN: 978-0292728646. ; Morgan, Janet P. (1984). Agatha Christie: A Biography. London: HarperCollins. ISBN: 978-0-00-216330-9. Retrieved 8 March 2015. ; Prichard, Mathew (2012). The Grand Tour: Around The World With The Queen Of Mystery. New York, NY: HarperCollins. ISBN: 978-0-06-219122-9. ; Thompson, Laura (2008), Agatha Christie: An English Mystery, London: Headline Review, ISBN: 978-0-7553-1488-1. Morgan, Janet P. 
Title: Agatha Christie bibliography
Content:  she continued to write and steadily built up a fan base. She went on to write over a hundred works, including further novels, short stories, plays, poetry, and two autobiographies. She also wrote six romantic novels under the pseudonym Mary Westmacott. One of Christie's plays, The Mousetrap, opened in West End theatre in 1952 and, as of December 2019, was still running; in 2009 the London run exceeded 25,000 performances. In September 2015 a public vote identified And Then There Were None—originally published in 1939 under the name Ten Little Niggers—as the public's favourite Christie novel; the book was the writer's 
Title: Agatha Christie: An Autobiography
Content: 1977, William Collins and Sons (London), November 1977, Hardcover, 544 pp ISBN: 0-00-216012-9 ; 1977, Dodd, Mead and Company (New York), Hardcover, 529 pp, ISBN: 0-396-07516-9 ; 1977, Scherz (Bern, Munich, Vienna), named "Meine gute alte Zeit" (My good old times) and translated into German by Hans Erik Hausner. Paperback, 539 pp., ISBN: 3-502-51515-8 ; 1978, Fontana Books (Imprint of HarperCollins), Paperback, 576 pp ; 1978, Editorial Molino (Barcelona). The book was published Hardcover named "Autobiografía" and translated to Spanish by Diorki. 564 pp ISBN: 84-272-1801-X ; 1978, Ballantine Books, Paperback, ISBN: 0-345-27646-9 ; 1978, Ulverscroft Large-print Edition, (2 volumes) Hardcover, 611 pp (Volume 1) and 535 (Volume 2), ISBN: 0-7089-0255-3 (Both volumes) ; 2002, Lyhnari (Greece), named "Η Αυτοβιογραφία μου" (My autobiography) and translated into Greek by Hilda Papadimitriou. Paperback, 528 pp ISBN: 960-517-258-5 ; 1993, HarperCollins (London), Paperback, 559 pp, ISBN: 9780006353287 ; 2003, Arnoldo Mondadori Editore (Italy), named "La mia vita" and translated to Italian by Maria Giulia Castagnone. 560 pp., ISBN: 8804522259 ; 2008, Partvonal (Hungary) named "Életem" (My Life) and translated to Hungarian by Tibor Kállai. 652 pp. ISBN: 9789639644953 and the 2nd ed. Helikon (Hungary) 2021, 692 pp.  ISBN: 9789634796091 

Question: what type of books did agatha christie wrote?
Answer: Crime writer.