… was born on this date in 1890. The Writer’s Almanac has this (and more):
During World War I, she was working as a Red Cross nurse, and she started reading detective novels because, she said, “I found they were excellent to take one’s mind off one’s worries.” She grew frustrated with how easy it was to guess the murderer in most mysteries, and she decided to try to write her own. That book was The Mysterious Affair at Styles (1920) about a series of murders at a Red Cross hospital.
Christie’s first few books were moderately successful, and then her novel The Murder of Roger Ackroyd came out in 1926. That same year, Christie fled her own home after a fight with her husband, and she went missing for 10 days. There was a nationwide search, and the press covered the disappearance as though it were a mystery novel come to life, inventing scenarios and speculating on the possible murder suspects, until finally Christie turned up in a hotel, suffering from amnesia. During the period of her disappearance, the reprints of her earlier books sold out of stock and two newspapers began serializing her stories. She became a household name and a best-selling author for the rest of her life.