Margery Allingham was a British author born on May 20, 1904, in Ealing, London. She is best known for her detective fiction, particularly her series featuring the character Albert Campion, a gentleman detective. Allingham's writing style combined wit and intricate plots, making her one of the prominent figures in the Golden Age of Detective Fiction. Throughout her career, Allingham published numerous novels, short stories, and essays. Her works often explored themes of morality and human nature, earning her critical acclaim. She passed away on June 30, 1966, leaving behind a legacy that continues to influence mystery writers today.