As Miss Marceau, the assistant manager of the Orient Express, solve puzzles, interview passengers, search compartments and gather forensic evidence to help temporarily indisposed Hercule Poirot solve a paradoxical murder on the train.

The world-famous Agatha Christie mystery novel is given the point-and-click adventure game treatment. With some new twists and turns added in, the player takes the role of new character Antoinette Marceau. Aboard the luxurious Orient Express, sinister American businessman Mr. Ratchett has a dark secret. In the morning, the train is snowbound and Ratchett is found murdered. Antoinette acts as assistant detective to Belgian sleuth Hercule Poirot, as he is confined to bed with a sprained ankle...