Agatha Christi is one of the most successful writers of classic crime novels. He wrote 149 short stories, more than a dozen plays, and over 70 thrillers and crime novels, one of which is Murder on the Orient Express. This novel has Hercule Poirot as its protagonist, a small, brilliant, lively Belgian detective, with a waxy mustache and an alert mind, who solves even the most complex crimes, such as that of the Orient Express, with the help of his little gray cells. Agatha Christi did not really like the deep characterization of her characters, it is easy to read Hercule Poirot's behavior and understand that he is actually an emotional and eccentric man, very intelligent, extremely aware and instinctive, and is a brilliant detective who lives to solve crimes, he always puts himself wholeheartedly into the case. Because of his deep love for criminal puzzles, he lets himself be carried away by emotions and passion, so his revelation of the killer turns into a very theatrical spectacle. He screams, jumps, sweats and gets all red in the face when he talks about the crime. Furthermore, her passion and theatricality can be seen through the excessive use of interjections and underlining some of the key words in the text "But if you work as a waitress, your employers rarely have the chance to learn..." (Christie 135 ), which are adopted to indicate his path of thought, suggests possible answers, and leads readers to the solution of the mystery, step by step. On the other hand, he was not the only theatrical character in The Murder of the Orient Express. All the passengers of the Stambul-Calais carriage had one goal: to avenge little Daisy by killing Mr. Ratchett. To do this successfully, they fully played other characters and... middle of paper... baggage too. Secondly, Princess Dragomiroff, a Russian princess, also made many missteps as she told many lies about the identity of the other passengers, and many of them were contradictory to what the passengers themselves had said. Count Andrenyi made a mistake by acting unduly defensive and trying in every way to hide his wife's true identity. To conclude, every passenger on the Orient Express Stambul-Calais bus, no matter how excellent actors they were, made mistakes. Small or large, they all helped Hercule Poirot create the vision of the crime and reveal the real killers. However, not only Hercule Poirot was theatrical by nature, but also the other passengers, as each of them played a different role for a few days in a row, making mistakes that were not noticeable to the average man, but which revealed the real killers..