Christie had a sister, Margaret Frary Miller (1879-1950),
called Madge, eleven years her senior, and a brother, Louis Montant
Miller (1880-1929),
called Monty, ten
years older than Christie.Mallowan was 14 years younger than Christie, and his travels with her contributed background to several of her novels set in the Middle East.They Came to Baghdad (published in 1951) is an espionage novel by Agatha Christie, inspired by Christie''s own trips to Baghdad with her second husband, archaeologist Max Mallowan. It is also one of few Christie novels belonging to the action and spy drama genres, rather than to mysteries and whodunits.