Felicity Jones to play Agatha Christie in Eleven Missing Days Felicity Jones will star as Agatha Christie in Eleven Missing Days, a new movie about the legendary author's mysterious disappearance in 1926. 11 May 2026 Felicity Jones will portray Agatha Christie in Eleven Missing Days. Felicity Jones has been cast as Agatha Christie in Eleven Missing Days The 42-year-old star has been cast as the legendary author in the mystery-thriller that is based on the true story of the Murder on the Orient Express scribe's mysterious disappearance in 1926.