Agatha Christie
1907–1926: early literary attempts, marriage, literary success

After completing her education, Christie returned to England to find her mother ailing. They decided to spend the northern winter of 1907–1908 in the warm climate of Egypt, which was then a regular tourist destination for wealthy Britons. They stayed for three months at the Gezirah Palace Hotel in Cairo. Christie attended many dances and other social functions; she particularly enjoyed watching amateur polo matches. While they visited some ancient Egyptian monuments such as the Great Pyramid of Giza, she did not exhibit the great interest in archaeology and Egyptology that developed in her later years. Returning to Britain, she continued her social activities, writing and performing in amateur theatrics. She also helped put on a play called The Blue Beard of Unhappiness with female friends.

At 18, Christie wrote her first short story, "The House of Beauty", while recovering in bed from an illness. It consisted of about 6,000 words about "madness and dreams", subjects of fascination for her. Her biographer Janet Morgan has commented that, despite "infelicities of style", the story was "compelling". (The story became an early version of her story "The House of Dreams".) Other stories followed, most of them illustrating her interest in spiritualism and the paranormal. These included " The Call of Wings " and "The Little Lonely God". Magazines rejected all her early submissions, made under pseudonyms (including Mac Miller, Nathaniel Miller, and Sydney West); some submissions were later revised and published under her real name, often with new titles.

Around the same time, Christie began work on her first novel, Snow Upon the Desert. Writing under the pseudonym Monosyllaba, she set the book in Cairo and drew upon her recent experiences there. She was disappointed when the six publishers she contacted declined the work. Clara suggested that her daughter ask for advice from the successful novelist Eden Phillpotts, a family friend and neighbour, who responded to her enquiry, encouraged her writing, and sent her an introduction to his own literary agent, Hughes Massie, who also rejected Snow Upon the Desert but suggested a second novel.

Meanwhile, Christie's social activities expanded, with country house parties, riding, hunting, dances, and roller skating. She had short-lived relationships with four men and an engagement to another. In October 1912, she was introduced to Archibald "Archie" Christie at a dance given by Lord and Lady Clifford at Ugbrooke, about 12 miles (19 km) from Torquay. The son of a barrister in the Indian Civil Service, Archie was a Royal Artillery officer who was seconded to the Royal Flying Corps in April 1913. The couple quickly fell in love. Three months after their first meeting, Archie proposed marriage, and Agatha accepted.

With the outbreak of World War I in August 1914, Archie was sent to France to fight. They married on Christmas Eve 1914 at Emmanuel Church, Clifton, Bristol, close to the home of his mother and stepfather, when Archie was on home leave. Rising through the ranks, he was posted back to Britain in September 1918 as a colonel in the Air Ministry. Christie involved herself in the war effort as a member of the Voluntary Aid Detachment of the British Red Cross. From October 1914 to May 1915, then from June 1916 to September 1918, she worked 3,400 hours in the Town Hall Red Cross Hospital, Torquay, first as a nurse (unpaid) then as a dispenser at £16 (approximately equivalent to £1,130 in 2023) a year from 1917 after qualifying as an apothecary's assistant. Her war service ended in September 1918 when Archie was reassigned to London, and they rented a flat in St. John's Wood.

Christie had long been a fan of detective novels, having enjoyed Wilkie Collins 's The Woman in White and The Moonstone, and Arthur Conan Doyle 's early Sherlock Holmes stories. She wrote her first detective novel, The Mysterious Affair at Styles, in 1916. It featured Hercule Poirot, a former Belgian police officer with "magnificent moustaches" and a head "exactly the shape of an egg", who had taken refuge in Britain after Germany invaded Belgium. Christie's inspiration for the character came from Belgian refugees living in Torquay, and the Belgian soldiers she helped to treat as a volunteer nurse during the First World War. Her original manuscript was rejected by Hodder & Stoughton and Methuen. After keeping the submission for several months, John Lane at The Bodley Head offered to accept it, provided that Christie change how the solution was revealed. She did so, and signed a contract committing her next five books to The Bodley Head, which she later felt was exploitative. It was published in 1920.

Christie settled into married life, giving birth to her only child, Rosalind Margaret Clarissa (later Hicks), in August 1919 at Ashfield. Archie left the Air Force at the end of the war and began working in the City financial sector on a relatively low salary. They still employed a maid. Her second novel, The Secret Adversary (1922), featuring new detective couple Tommy and Tuppence, was also published by The Bodley Head. It earned her £50 (approximately equivalent to £3,400 in 2023). A third novel, Murder on the Links, again featured Poirot, as did the short stories commissioned by Bruce Ingram, editor of The Sketch magazine, from 1923. She now had no difficulty selling her work.

In 1922, the Christies joined an around-the-world promotional tour for the British Empire Exhibition, led by Major Ernest Belcher. Leaving their daughter with Agatha's mother and sister, in 10 months they travelled to South Africa, Australia, New Zealand, Hawaii, and Canada. They learned to surf prone in South Africa; then, in Waikiki, they were among the first Britons to surf standing up, and extended their time there by three months to practise. She is remembered at the British Surfing Museum as having said about surfing, "Oh it was heaven! Nothing like rushing through the water at what seems to you a speed of about two hundred miles an hour. It is one of the most perfect physical pleasures I have known."

When they returned to England, Archie resumed work in the city, and Christie continued to work hard at her writing. After living in a series of apartments in London, they bought a house in Sunningdale, Berkshire, which they renamed Styles after the mansion in Christie's first detective novel.

Christie's mother, Clarissa Miller, died in April 1926. They had been exceptionally close, and the loss sent Christie into a deep depression. In August 1926, reports appeared in the press that Christie had gone to a village near Biarritz to recuperate from a "breakdown" caused by "overwork".
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