The Big Four · Chapter
II: The Man from the Asylum explained
Poirot and Hastings return to London after realizing the train diversion was a plot to get Poirot out of the way.
What happens
Poirot and Hastings return to London after realizing the train diversion was a plot to get Poirot out of the way. They find their guest dead, apparently from natural causes, but Poirot deduces he was gagged and poisoned with prussic acid. A man claiming to be an asylum keeper arrives to identify the dead man as an escaped patient, but later Poirot learns no escape occurred. Japp identifies the victim as Mayerling, a Secret Service agent who disappeared in Russia five years ago. Poirot concludes the killer is Number Four, the destroyer, and that the Big Four have begun a duel to the death.
Free preview opens on this chapter — companions, themes, and character notes appear beside the text.
Narrative arc
Story tension across the book — this chapter sits in Exposition.
- Setup
- Escalation
- Breaking point
- Aftermath
- Closing
This is the dramatic climax because Hastings is forced to confront the ultimate emotional and psychological pe…
Full beat labels and climax notes unlock in the reader.
Follow the arc while readingThemes in this chapter
- Deception and Disguise
The fake asylum keeper and the plot to divert Poirot highlight the theme of deception.
- Global Criminal Conspiracy
The Big Four, comprising a Chinaman, an American, a Frenchwoman, and another, represent an international criminal organization.
Characters to notice
- Hercule Poirot
Deduces the train diversion was a plot to get him out of the way; investigates the murder of Mayerling; realizes the killer is Number Four.
- Captain Hastings
Accompanies Poirot back to London; assists in the investigation; observes the clues.
- Inspector Japp
Called by Poirot to identify the dead man; recognizes him as Mayerling, a former Secret Service agent.
- Mayerling
The victim; a Secret Service agent who disappeared in Russia five years ago; found dead in Poirot's rooms.
- Number Four
Implied to be the murderer; disguised as an asylum keeper; referred to as 'the destroyer'.
Key passages
“You do not see? No more did I. But I see now. Hastings, I was being got out of the way.”
Poirot realizes the train diversion was a deliberate attempt to remove him from the scene.
Poirot's deduction about the plot against him.
“He has been gagged, Hastings. Gagged and then poisoned.”
Poirot discovers the victim was silenced and killed with poison.
Key forensic observation by Poirot.
“There has been no escape.”
The asylum confirms no patient escaped, revealing the keeper was an impostor.
Pivotal revelation that the killer was disguised.
