The Mystery of the Blue Train · Chapter
XI: Murder explained
Katherine Grey wakes to brilliant sunshine on the Blue Train.
What happens
Katherine Grey wakes to brilliant sunshine on the Blue Train. After breakfast, she notices that the compartment of the lady in the mink coat remains shuttered. Upon arrival at Nice, she is met by Chubby Evans but is intercepted by the police. Commissary M. Caux and Hercule Poirot question her about the murdered woman, whom she identifies by a mole on the wrist. The body shows signs of strangulation and a post-mortem blow to the face. Poirot and the Commissary discuss possibilities: a crime of passion or a train robbery. Katherine agrees to assist Poirot in the investigation.
Themes in this chapter
Deception and Appearances
The murdered woman's identity is confirmed despite the disfigurement, and the train's luxurious facade hides a brutal crime.
Justice and Morality
The police and Poirot begin their pursuit of the murderer, emphasizing the need for justice in the face of a violent death.
Characters to notice
- Katherine Grey
Wakes to sunshine, identifies the murdered woman, and agrees to help Poirot investigate.
- Hercule Poirot
Present during the police questioning; examines the compartment and notes the strange post-mortem blow; invites Katherine to join the investigation.
- Ruth Kettering
The murdered woman; found strangled with a black cord, her face disfigured after death; identified by Katherine via a mole on her wrist.
- Chubby Evans
Lady Tamplin's husband; meets Katherine at the Nice station and assists with her luggage.
- M. Caux
Commissary of Police; conducts the initial investigation and discusses theories with Poirot.
Key passages
“Madame is fortunate; the sun shines. It is always a great disappointment to passengers when they arrive on a grey morning.”
The conductor remarks that Katherine is lucky to have sunny weather, as passengers are often disappointed by a grey arrival.
Sets the contrast between the bright morning and the dark crime that has occurred.
“I am quite sure. The face is too disfigured to recognise, but the build and carriage and hair are exact, and besides I noticed this — a tiny mole on the dead woman’s wrist.”
Katherine confidently identifies the victim by her build, hair, and a small mole on her wrist, despite the facial disfigurement.
Highlights Katherine's composure and attention to detail as a key witness.
“This shall be a ‘roman policier’ à nous. We will investigate this affair together.”
Poirot proposes that he and Katherine work together on this detective story.
Poirot invites Katherine into the investigation, establishing their partnership.