A biopic of Agatha Christie including her 10 day disappearance.
| Actor | Role |
|---|---|
 Olivia WilliamsAgatha Christie | Agatha Christie |
 Anna MasseyOld Agatha Christie | Old Agatha Christie |
 Raymond CoulthardArchie Christie | Archie Christie |
 Stephen BoxerPsychatrist | Psychatrist |
 Anthony O'DonnellHercule Poirot | Hercule Poirot |
| Anthony O'DonnellKenward | Kenward |
 Mark GatissKenyon | Kenyon |
 Richard LeafGunman | Gunman |
 Bonnie WrightYoung Agatha Christie | Young Agatha Christie |
| CCelia MontagueAgatha Christie's Mother | Agatha Christie's Mother |
 James TuckerReggie | Reggie |
 Vicki PepperdineCarlo Fisher | Carlo Fisher |
 Bertie CarvelMax Mallowan | Max Mallowan |
 Edmund KingsleySoldier | Soldier |
 Gregory FinneganBand Member | Band Member |
 Toby StephensDoctor Edward Armstrong | Doctor Edward Armstrong |
 Agatha ChristieSelf (archive footage) | Self (archive footage) |