Agatha Christie: Murder on the Orient Express Suchet to do voice acting for "Murder on the Orient Express", and said that his skillful voice acting would bring "tremendous excitement and authenticity" to the game. As with "And Then There Were None", Sheldon introduced a new character to the plot of "Murder on the Orient Express", who was not present in Christie's novel, in order to fulfill the role of a player character and protagonist. The character, Antoinette Marceau, is described by Sheldon as an amalgam of two characters from the novel. These were Poirot's friend who ran the Orient Express, Marcel Bouc, and a young soldier who
The Murder on the Links in the 1928 short story "Double Sin" which was published in book form in the US in "Double Sin and Other Stories" in 1961 and in the UK in "Poirot's Early Cases" in 1974. Some plot twists are inspired by Sir Arthur Conan Doyle's "The Adventure of the Abbey Grange". The novel received its first true publication as a four-part serialisation in the "Grand Magazine" from December 1922 to March 1923 (Issues 214–217) under the title of "The Girl with the Anxious Eyes" before it was issued in book form by The Bodley Head in May 1923. This was Christie's