Agatha Christie: Murder on the Orient Express Hints

I can't keep track of the characters!

• There are an awful lot of them, aren't there? Agatha Christie knew that it's hard to keep track sometimes, so she often listed them at the beginning of her books, and in fact she does so in this case; look at the "Cast of Characters" section in the book included with the game for her one-sentence descriptions of each person's personality.
  
  For a more succinct guide, here's an alphabetic list of everyone in this game, with nationality, occupation, and berth on the train:
  
  Passengers:
  Count Rudolf Andrenyi: Hungarian diplomat. Room: Calais 13
  Countess Elena Andrenyi: Hungarian diplomat's wife. Room: Calais 12
  Colonel Francis Arbuthnot: English colonel. Room: Calais 15
  Dr. Stavros Constantine: Greek doctor. Room: Athens-Paris 13
  Mary Debenham: English governess. Room: Calais 5-6
  Princess Natalia Dragomiroff: Russian aristocrat. Room: Calais 14
  Antonio Foscarelli: Italian car salesman. Room: Calais 1-2
  Cyrus Hardman: American typewriter supplies salesman. Room: Calais 16
  Mrs. Caroline Hubbard: American tourist. Room: Calais 11
  Hector MacQueen: American secretary. Room: Calais 3-4
  E.H. Masterman: English valet. Room: Calais 1-2
  Greta Ohlsson: Swedish missionary. Room: Calais 7-8
  Hercule Poirot: Belgian detective. Room: Calais 9
  Samuel Ratchett: American businessman. Room: Calais 10
  Hildegarde Schmidt: German lady's maid. Room: Calais 5-6
  
  Employees:
  Klaus Herkensheimer: German chef. Room: Athens-Paris 9
  Antoinette Marceau: French railway secretary. Room: Calais 7-8
  Pierre Michel: French train conductor. Room: Athens-Paris 11
  Abdullah Ozbizen, Turkish fireman. Room: Athens-Paris 3-4
  Lucien Revillard: French waiter. Room: Athens-Paris 1-2
  Matteo Riverte: Spanish conductor. Room: Athens-Paris 15
  Tayyip Sensoy: Turkish engineer. Room: Athens-Paris 10
  

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