Based on Emile Zola's 'La Bete Humaine', this stylish film noir is set in Britain during the Blitz. Ruben Roberts discovers he owes everything - job and home - to the sexual favours forced upon his wife by her rich and powerful godfather. Assisted by his wife, Ruben murders him on the Brighton Express. A witness has to be silenced.

David Suchet, TV's Poirot, has spent more of his life acting out the plots and dramas created by Agatha Christie than anyone else in the world. Suchet is embarking on a journey to learn more about the woman who created Poirot and whose books remain outsold only by Shakespeare and the Bible. Suchet's journey takes him to the places Christie lived, the landscapes that inspired her and to meetings with people who knew the woman behind the fame and those inspired by her extraordinary legacy. He explores the close links between Christie's extraordinary life and her work and discovers what it was about the woman from a small seaside town that allowed her to become the best-selling murder mystery writer in history.