Felicity Jones, known for her Oscar-nominated performances, will lead the cast in 'Eleven Missing Days,' a film that delves into the real-life mystery of Agatha Christie's disappearance in December 1926. During a tumultuous period in her life, Christie vanished for 11 days, prompting a nationwide search in Britain. Her abandoned car, found with clothes inside, added to the intrigue surrounding her sudden absence. The film, directed by Bertie Ellwood, will also feature Vincent Cassel as a detective reminiscent of Christie's iconic character, Hercule Poirot. The screenplay is based on Jared Cade's book, 'Agatha Christie and the Missing Eleven Days.' Despite various theories about her disappearance, Christie never publicly clarified the incident, which has inspired numerous adaptations over the decades. 'Eleven Missing Days' aims to offer a fresh cinematic take on this captivating chapter of her life.