The killer uses the alias ABC, and strikes in a methodical pattern, leaving a copy of the ABC railway guide at the scene of each of murder. As Poirot attempts to investigate he is thwarted on every front.

Cast: Eamon Farren, Shirley Henderson, John Malkovich, Michael Shaeffer, Rupert Grint, Kevin McNally, Tamzin Griffin, Alan Bentley, Conrad McCroddan, Anya Chalotra, Ian Pirie, Shane Attwooll, Eve Austin, Bronwyn James, Olwen May