The Mysterious Affair at Styles · Chapters
Chapters explained
Chapter companions for The Mysterious Affair at Styles by Agatha Christie.
Chapter 1
Dedication
The book is dedicated to the author's mother.
Chapter 2
The Mysterious Affair at Styles
The opening chapter introduces the setting of Styles Court and the arrival of Arthur Hastings as a guest. The household is introduced, including the elderly Mrs. Inglethorp, her much younger husband Alfred, her stepsons John and Lawrence Cavendish, John's wife Mary, and the young ward Cynthia Murdoch. Tensions are hinted at, particularly surrounding the recent marriage and the presence of the mysterious Dr. Bauerstein. The chapter establishes the atmosphere of suspicion and hidden conflicts that will lead to the central mystery.
Chapter 3
I: I Go to Styles
Arthur Hastings, invalided home from the Front, accepts an invitation from John Cavendish to stay at Styles Court. He learns of the recent marriage of John's stepmother, Mrs. Inglethorp, to a much younger man, Alfred Inglethorp, which has caused family tension. Evelyn Howard, Mrs. Inglethorp's companion, quarrels with Alfred and leaves abruptly, warning Hastings to watch over Mrs. Inglethorp and to beware of her husband. Hastings meets Dr. Bauerstein, a poison expert and friend of Mary Cavendish, and senses an atmosphere of suspicion and approaching evil.
Chapter 4
The 16th and 17th of July
Hastings recounts the events of July 16th and 17th at Styles. The household prepares for an evening entertainment where Mrs. Inglethorp recites a war poem. The next day, Hastings and Lawrence visit Cynthia at her dispensary, where they meet Hercule Poirot. Returning home, they find Mrs. Inglethorp agitated after a row with her husband. Mary Cavendish is also disturbed, and Hastings overhears a tense exchange between her and Mrs. Inglethorp. That evening, Dr. Bauerstein arrives muddy from a fall, and Mrs. Inglethorp retires early, still carrying her coffee untasted.
Chapter 5
III: The Night of the Tragedy
Hastings is awakened by Lawrence Cavendish, who reports that Mrs. Inglethorp is gravely ill and has locked herself in her room. The household gathers, and after breaking down the door, they find her suffering violent convulsions. Dr. Bauerstein arrives and suspects poisoning, while Dr. Wilkins is called. Mrs. Inglethorp dies, and a postmortem is agreed upon. Hastings proposes bringing in Hercule Poirot to investigate, and John Cavendish reluctantly agrees.
Chapter 6
IV: Poirot Investigates
Hastings visits Poirot at his cottage to recount the events of Mrs. Inglethorp's death. Poirot emphasizes the importance of every detail, even seemingly trivial ones like Mrs. Inglethorp's appetite at supper. They proceed to Styles Court, where Poirot examines the boudoir and retrieves a curious crumpled envelope from Mr. Inglethorp's desk. John Cavendish meets them and expresses concern about publicity, while Poirot cryptically remarks that the difficulty of how to treat Alfred Inglethorp 'will not exist long.'
Chapter 7
It Isn't Strychnine, Is It?
Poirot examines the coffee cups from the night of Mrs. Inglethorp's death and discovers a charred fragment of a will in the grate. He questions the gardener Manning about Mrs. Inglethorp's actions the previous afternoon, revealing that she had called him to the window. The chapter also covers the family's strained breakfast, where Poirot notices Cynthia's coffee preferences and becomes excited, and the arrival of lawyer Mr. Wells to discuss the estate.
Chapter 8
VI: The Inquest
The inquest into Mrs. Inglethorp's death unfolds with testimony from Dorcas, Mary Cavendish, Cynthia Murdoch, and others. Dr. Bauerstein and Dr. Wilkins confirm strychnine poisoning, dismissing suicide or accidental overdose. Lawrence Cavendish suggests the tonic may have been responsible, but the doctors refute it. Alfred Inglethorp denies purchasing strychnine and claims his wife mistook Dr. Bauerstein for him in her dying words. The jury returns a verdict of wilful murder against a person or persons unknown.
Chapter 9
VII: Poirot Pays His Debts
Poirot meets with Scotland Yard detectives Inspector Japp and Superintendent Summerhaye, who are convinced of Alfred Inglethorp's guilt. Poirot argues against arresting Inglethorp, revealing that he has an alibi: Inglethorp was escorting Mrs. Raikes home at the time the poison was purchased. Poirot explains his theory that someone disguised as Inglethorp bought the strychnine, and he presses Inglethorp to reveal his whereabouts, but Inglethorp remains silent, suggesting he has something discreditable to hide. Poirot also notes Lawrence Cavendish's suspicious behavior in suggesting accidental poisoning despite his medical knowledge.
Chapter 10
Fresh Suspicions
Poirot and Hastings discuss the possibility of Evelyn Howard being the murderer, but Poirot dismisses it due to lack of motive. Poirot sends Hastings with a cryptic message for Lawrence Cavendish: 'Find the extra coffee-cup, and you can rest in peace.' Poirot has a sample of cocoa re-analysed despite previous tests. Alfred Inglethorp provides an alibi, clearing him of suspicion, and prepares to leave Styles. Hastings reveals that Dr. Bauerstein was present on the night of the murder, which Poirot considers highly significant. The household experiences relief and media scrutiny. Dorcas mentions a dressing-up box that might contain a green dress.
Chapter 11
IX: Dr. Bauerstein
Hastings delivers Poirot's cryptic message about the extra coffee-cup to Lawrence, who professes ignorance. At lunch, Poirot questions Mary and Lawrence about whether the door from Cynthia's room to Mrs. Inglethorp's was bolted or locked. Later, Hastings and John discuss the possibility that Dr. Bauerstein poisoned Mrs. Inglethorp, with Hastings suggesting Bauerstein could have substituted a clean cocoa sample for analysis. Hastings also entertains the dark thought that Mary Cavendish might be involved. After tea, Cynthia confides in Hastings that she feels unwelcome at Styles and he impulsively proposes marriage, which she rejects.
Chapter 12
The Arrest
Hastings is dismayed to find Poirot absent, then learns that Dr. Bauerstein has been arrested—but for espionage, not murder. Poirot returns and reveals his suspicions about Bauerstein's true activities. Miss Howard delivers a piece of brown paper with an initial that Poirot believes is 'L.' Mary Cavendish confesses to Hastings that her marriage is unhappy and she intends to leave Styles. A letter from French music publishers arrives, acknowledging Mrs. Inglethorp's cheque.
Chapter 13
XI: The Case for the Prosecution
The trial of John Cavendish for the murder of his stepmother takes place two months later. Mary Cavendish passionately supports her husband. Poirot reveals he has long suspected John but lacks the final link in his chain of evidence. He must remain behind the scenes, letting Japp take credit, and may even appear as a witness for the defense. The prosecution presents its case, including John's purchase of strychnine in disguise, his quarrel with the deceased, and the destruction of the will. John reserves his defense. Poirot grows increasingly discouraged as the trial proceeds.
Chapter 14
The Last Link
Poirot reveals the final pieces of the puzzle, explaining that Mrs. Inglethorp herself destroyed the will by burning it in a fire, that Mary Cavendish administered a narcotic to Cynthia and Mrs. Inglethorp, and that the strychnine came from a precipitated bromide in the medicine. He reconstructs the events leading to the murder, clearing up misconceptions and identifying the true culprits.
Chapter 15
XIII: Poirot Explains
Poirot reveals to Hastings the full extent of his investigation, explaining how he deliberately allowed Alfred Inglethorp to incriminate himself while protecting John Cavendish. He details the discovery of the hidden letter in the spill vase and the motives behind the crime, and reconciles John and Mary Cavendish.
Chapter 16
List of Illustrations
This chapter contains floor plans of Styles Court and Mrs. Inglethorp's bedroom, along with images of physical evidence including a half-charred paper and a crumpled envelope with scrawled writing.
