agatha christie murder on the blue train

Ruth Kettering, Van Aldin’s only daughter, Derek’s wife.Rufus Van Aldin, the American millionaire, Ruth’s father.Derek did go into the compartment to talk to Ruth once he saw she was on the train, but he left when he saw she was asleep. Since Knighton was supposedly in Paris, no one would have suspected him. He also says that the cigarette case with the 'K' on it does not stand for Kettering, but Knighton. He reveals that the murderer and Mason's accomplice is Knighton, who is really 'The Marquis'. Poirot realized that Mason was the only person who saw anyone with Ruth in the compartment, so this could have been a lie. Katherine saw what she thought was a boy getting off the train, but it was really Mason. He tells them that Ada Mason is really Kitty Kidd, a renowned male impersonator and actress. Poirot asks Van Aldin and Knighton to come with him on the Blue Train to recreate the murder. He does more investigating and learns more information, talking to his friends and to Katherine, eventually coming to the truth. Everyone is convinced the case is solved, but Poirot is not sure. Eventually, the dancer Mirelle, who was on the train with her lover Derek but now spurned and vengeful, tells Poirot she saw Derek leave Ruth's compartment around the time the murder would have taken place.

Poirot investigates and finds out that the murder and the jewel theft might not be connected, as the famous jewel thief The Marquis is connected to the crime. This also throws suspicion on Derek when a cigarette case with the letter 'K' is found. Katherine says she saw Derek enter Ruth's compartment. He is suspicious of Ruth's husband, Derek Kettering, who was on the same train but claims not to have seen Ruth. The police suspect that Ruth's lover, the Comte de la Roche, killed her and stole the rubies, but Poirot does not think he is guilty. Ruth's maid, Ada Mason, says she saw a man in Ruth's compartment but could not see who he was. Ruth's father, the American millionaire Rufus Van Aldin, and his secretary, Major Knighton, convince Poirot to take on the case. The famous ruby, 'Heart of Fire', which had recently been given to Ruth by her father, is discovered to be missing. The next morning, though, Ruth is found dead in her compartment, a victim of strangulation. On board Grey meets Ruth Kettering, an American heiress leaving her unhappy marriage to meet her lover.

So does Katherine Grey, who is having her first winter out of England, after recently receiving a relatively large inheritance. Poirot boards Le Train Bleu, bound for the French Riviera.

2.4 The Blue Train, Nice and the Riviera.

Agatha christie murder on the blue train