Murder on the Orient Express

There is a murderer on this train… Or more than one! Two passengers have been missing since yesterday, and the body of one of them was only found yesterday evening. Mr. Hercule Poirot advises the conductor in charge and the train’s police officer to gather all the passengers, including himself, in the train’s main restaurant. But before the door of the restaurant is locked, you receive a message from Mr. Poirot saying: “Don’t come into the restaurant with the others, if I’m not mistaken, the murderer is here with us, but it’s not proof of his guilt. I’ve left a letter for you, with all the information I know so far, and I’m going to stop everyone for an hour and pretend to interrogate them so you can find it! Good luck!