The Mystery of the Blue Train · Chapter
Interview with Mirelle explained
Major Knighton seeks out Poirot and confides his concern about Mirelle, Derek Kettering's mistress, who has been trying to see Mr.
What happens
Major Knighton seeks out Poirot and confides his concern about Mirelle, Derek Kettering's mistress, who has been trying to see Mr. Van Aldin. Despite Van Aldin's refusal, Knighton privately met with her and believes she knows something about the murder. Poirot and Knighton visit Mirelle at her hotel, where Poirot takes the lead, claiming to represent Van Aldin. Mirelle later gives a statement to the examining magistrate, accusing Derek of murdering his wife, claiming she saw him leave Ruth's compartment before the train reached Lyons. Poirot subtly questions her inconsistencies, particularly about how she knew Ruth was dead before it was publicly known, and about the missing rubies.
Themes in this chapter
Deception and Appearances
Mirelle's dramatic testimony is revealed to be potentially unreliable, highlighting the theme of appearances versus reality.
Justice and Morality
The chapter explores the pursuit of justice as Poirot and the magistrate question Mirelle's motives and the validity of her accusations.
Characters to notice
- Hercule Poirot
Accompanies Knighton to interview Mirelle, takes the lead in the conversation, and later questions Mirelle's statement during the official interrogation.
- Major Knighton
Seeks out Poirot to discuss Mirelle's request to see Van Aldin; arranges the interview with Mirelle despite Van Aldin's refusal.
- Mirelle
Derek Kettering's mistress; gives a statement accusing Derek of murdering his wife, but shows inconsistencies when questioned by Poirot.
- Derek Kettering
Accused by Mirelle of murdering his wife; she claims to have seen him leave Ruth's compartment before the train reached Lyons.
- Rufus Van Aldin
Refuses to see Mirelle; Knighton and Poirot act on his behalf despite his wishes.
- Katherine Grey
Mentioned as having confirmed seeing Derek Kettering go into his wife's compartment before the train reached Lyons.
Key passages
“I have a strong impression, M. Poirot, that that woman knows something.”
Knighton believes Mirelle has crucial information about the murder.
Knighton expresses his conviction to Poirot after his private meeting with Mirelle.
“It has been the ambition of my life to lay the Comte de la Roche by the heels. This time, ma foi, I thought we had got him. This other—it is not nearly so satisfactory.”
The Commissary regrets that the evidence points to Derek Kettering rather than the Comte de la Roche, whom he has long wanted to arrest.
The Commissary reveals his disappointment that the case seems to implicate Derek instead of the Comte.