He learns that Bouc will be traveling on the train with him. Bouc, who works for the company that manages the Orient Express. In Istanbul, he also reunites with his old friend M.
Poirot refuses, feeling suspicious of Ratchett's character. Before leaving Istanbul, he encounters a wealthy older man by the name of Ratchett, who asks for the detective's help fending off certain enemies. In Murder on the Orient Express, the detective Hercule Poirot, a recurring character in the work of Agatha Christie, finds that he must travel from Istanbul to Europe and so books a ticket on the famous Orient Express.
