Ellie Pollifax is a fictional character created by author Dorothy Gilman. She is a retired widow who becomes an unlikely spy for the Central Intelligence Agency (CIA) in her later years. Known for her adventurous spirit and resourcefulness, Ellie often finds herself in thrilling situations that challenge her wit and courage. The first book in the series, titled The Unexpected Mrs. Pollifax, introduces her as she embarks on her first mission. Throughout the series, Ellie navigates various international settings, showcasing her ability to adapt and solve problems, making her a beloved character in the world of mystery and espionage literature.