Murder
The murder of Samuel Edward Ratchett, alias Cassetti, is the central event of Agatha Christie's Murder on the Orient Express. Stabbed twelve times in his locked compartment while the train is snowbound in Jugo-Slavia, the crime forces detective Hercule Poirot to investigate the passengers of the Stamboul-Calais coach, ultimately revealing a conspiracy of twelve people connected to the Armstrong kidnapping case.
Discovery and Initial Investigation
The body of Samuel Edward Ratchett was discovered on the morning after the crime, when the train had been brought to a standstill by a snowdrift between Vincovci and Brod. The Wagon Lit conductor, Pierre Michel, opened the compartment with his key after Ratchett's valet, Edward Henry Masterman, had tapped several times without response. The door was locked and chained on the inside, and the window was found wide open, with snow drifting in. The body lay on its back, the pyjama jacket stained with rusty patches, unbuttoned and thrown back. Dr. Constantine, who examined the body, determined that death had occurred between midnight and two in the morning, and that the victim had been stabbed twelve times. The wounds were delivered haphazardly and at random, some feeble and glancing, others driven with great force through hard belts of bone and muscle. The chef de train immediately declared, "It is a woman," while Dr. Constantine noted that the crime was "most unscientific." Poirot, summoned by M. Bouc, a director of the Compagnie Internationale des Wagons Lits, agreed to take command of the investigation, noting that the problem "intrigues me."
The Victim's Identity and Motive
Poirot quickly established that Ratchett was not the man's real name. A charred fragment of paper found in the compartment, recovered by Poirot using a spirit stove and curling-tongs, revealed the words "member little Daisy Armstrong." This led Poirot to identify Ratchett as Cassetti, the mastermind behind the infamous Armstrong kidnapping case. Cassetti had kidnapped and murdered three-year-old Daisy Armstrong, the daughter of Colonel Armstrong and his wife Sonia. The crime had shattered the family: Mrs. Armstrong, pregnant, gave birth prematurely to a stillborn child and died; Colonel Armstrong shot himself; and a French nursemaid, Susanne, who was wrongly suspected of complicity, threw herself from a window. Cassetti was arrested but acquitted on a technicality, using his wealth to escape justice and leave America. Poirot concluded that the murder was either the work of a rival gang or an act of private vengeance, and the charred note pointed decisively to the latter.
The Evidence and the Conspiracy
Poirot interviewed all the passengers in the Stamboul-Calais coach. The evidence was a maze of contradictions and lies. Hector MacQueen, Ratchett's secretary, admitted he disliked his employer and was "rejoiced at his end." The valet, Masterman, claimed to have had toothache and remained in his compartment all night. Mrs. Hubbard, the American lady, insisted a man had been in her compartment, and produced a button from a Wagon Lit uniform as proof. The Swedish lady, Greta Ohlsson, admitted she had opened Ratchett's door by mistake. Princess Dragomiroff, a Russian aristocrat, revealed she was godmother to Sonia Armstrong. Count and Countess Andrenyi claimed to have seen and heard nothing. Colonel Arbuthnot, a British officer, provided an alibi for MacQueen. Cyrus Hardman, a private detective, claimed Ratchett had hired him for protection. The Italian, Antonio Foscarelli, and the German maid, Hildegarde Schmidt, each gave their accounts. Poirot noted that the evidence was "a perfect mosaic" of alibis, each person vouching for another, and that the crime scene contained two deliberately planted clues: a pipe-cleaner and a handkerchief with the initial H. The pipe-cleaner pointed to Colonel Arbuthnot, the only pipe-smoker on the train, and the handkerchief to Princess Dragomiroff, whose Christian name in Russian begins with H. Poirot also discovered a Wagon Lit uniform hidden in Hildegarde Schmidt's suitcase and a scarlet kimono placed in his own luggage, both clearly intended to confuse the investigation.
The Solution: The Jury of Twelve
Poirot propounded two solutions. The first, a conventional explanation involving an outside assassin who left the train at Brod, was quickly dismissed by Dr. Constantine as deficient. The second solution, which Poirot presented to the assembled passengers, revealed the truth: the murder was a collective act of vengeance carried out by twelve people, all connected to the Armstrong case. They had formed a self-appointed jury and, when Ratchett escaped legal justice, condemned him to death. Each person entered the darkened compartment through Mrs. Hubbard's and stabbed the drugged victim once, so that no one knew which blow actually killed him. The twelve passengers were: Hector MacQueen (whose father was the district attorney in the Armstrong case), Colonel Arbuthnot (Colonel Armstrong's best friend), Masterman (Colonel Armstrong's former batman), Antonio Foscarelli (the Armstrongs' chauffeur), Greta Ohlsson (Daisy's nurse), Mary Debenham (the Armstrongs' governess), Princess Dragomiroff (Sonia Armstrong's godmother), Countess Andrenyi (Sonia's younger sister, Helena Goldenberg), Count Andrenyi (who took his wife's place in the stabbing), Cyrus Hardman (who loved the nursemaid Susanne), Hildegarde Schmidt (the Armstrongs' cook), and Pierre Michel (Susanne's father). Mrs. Hubbard herself was revealed to be Linda Arden, the famous actress and mother of Sonia Armstrong, who had orchestrated the entire plan. She confessed, "I always fancied myself in comedy parts."
Aftermath and Significance
M. Bouc, as a director of the company, accepted Poirot's first, false solution as the official one to be presented to the Jugo-Slavian police, and Dr. Constantine agreed, retracting his earlier medical suggestions. Poirot thus "retired from the case." The murder of Ratchett is not a conventional whodunit but a study in collective justice, where the detective's role shifts from identifying a single culprit to uncovering a conspiracy. The crime is a deliberate, theatrical act of retribution, staged to appear as an outside job, and its solution hinges on Poirot's recognition that the "impossible" coincidence of so many Armstrong-connected people on one train was, in fact, a design. The murder becomes a moral and legal paradox, resolved not by the law but by the tacit agreement of the authorities to let the conspirators go free.