Story Structure — 5 Plot Phases
The Divided Mind
Marlowe presents his theory that human personalities contain opposing sides. He introduces a drug designed to penetrate the unconscious and separate moral impulses.
Key Events
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Nature of Evil Debate — Marlowe argues that human personalities contain opposing sides, alarming Enfield and Lanyon. Characters: Dr. Charles Marlowe / Mr. Edward Blake, Enfield, Lanyon
Location: Marlowe's house
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The Separation Theory — Marlowe explains that opposing personality traits might be separated. Characters: Dr. Charles Marlowe / Mr. Edward Blake, Enfield, Lanyon
Location: Marlowe's house
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Poole Left Alone — Marlowe leaves Poole in the household for the night. Characters: Dr. Charles Marlowe / Mr. Edward Blake, Poole
Location: Marlowe's household
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Unconscious-Breaking Drug — Marlowe explains that his drug is intended to break through unconscious barriers. Characters: Dr. Charles Marlowe / Mr. Edward Blake, Poole
Location: Marlowe's house
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Animal Experiments — Animal experiments produce timid, helpless, aggressive, and ferocious results. Characters: Dr. Charles Marlowe / Mr. Edward Blake
Location: Marlowe's house
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Moral Restraint Theory — Marlowe imagines destroying morality to release guiltless and violent impulses. Characters: Dr. Charles Marlowe / Mr. Edward Blake
Location: Marlowe's house
Blake Enters Soho
A frightening man calling himself Blake rents a room and demands an uncertain stay. Destructive robberies and purposeless assaults begin appearing in Soho.
Key Events
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Moral Restraint Theory — Marlowe imagines destroying morality to release guiltless and violent impulses. Characters: Dr. Charles Marlowe / Mr. Edward Blake
Location: Marlowe's house
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Blake Rents A Room — A frightening man calling himself Edward Blake rents a room and pays in advance. Characters: Dr. Charles Marlowe / Mr. Edward Blake
Location: A rented room
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Blake Demands Freedom — Blake demands an uncertain stay, establishing his threatening and uncontrolled presence. Characters: Dr. Charles Marlowe / Mr. Edward Blake
Location: A rented room
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Soho Crimes Begin — Reports describe destructive robberies and apparently motiveless violent assaults. Characters: Dr. Charles Marlowe / Mr. Edward Blake
Location: Soho
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Unexplained Street Encounter — A reported sighting connects a man and a young girl with the unexplained crimes. Characters: Dr. Charles Marlowe / Mr. Edward Blake
Location: A deserted street
The House Under Control
Utterson investigates Marlowe's disappearance and learns that Blake possesses a household key. Lanyon explains the scientific dispute, while a document exposes Blake's claim to Marlowe's possessions.
Key Events
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Utterson Investigates — Worried by Marlowe's disappearance, Utterson investigates the doctor's house. Characters: Frederick Utterson, Dr. Charles Marlowe / Mr. Edward Blake, Poole
Location: Marlowe's house
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The Household Key — Poole reveals that Blake possesses a key and controls the household. Characters: Frederick Utterson, Poole, Dr. Charles Marlowe / Mr. Edward Blake
Location: Marlowe's house
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Blackmail Suspicion — Utterson suspects that Marlowe is being blackmailed by Blake. Characters: Frederick Utterson, Dr. Charles Marlowe / Mr. Edward Blake
Location: Marlowe's house
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Lanyon Breaks With Marlowe — Lanyon explains to Utterson why he rejected Marlowe's personality-separating drug. Characters: Lanyon, Frederick Utterson, Dr. Charles Marlowe / Mr. Edward Blake
Location: Marlowe's house
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The Three-Month Document — A document states that Blake receives Marlowe's possessions after three months of disappearance. Characters: Frederick Utterson, Dr. Charles Marlowe / Mr. Edward Blake
Location: Marlowe's house
The Cane At Dockland
A vicious Dockland murder produces physical evidence resembling Blake's gold-headed cane. Utterson uses it to warn Marlowe that Blake may be the killer.
Key Events
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Dockland Murder — After a vicious Dockland murder, Utterson finds a cane resembling Blake's. Characters: Frederick Utterson, Dr. Charles Marlowe / Mr. Edward Blake
Location: Dockland
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Utterson Warns Marlowe — Utterson warns Marlowe that Blake may be responsible for the killing. Characters: Frederick Utterson, Dr. Charles Marlowe / Mr. Edward Blake
Location: Marlowe's house
The Unresolved Letter
Marlowe claims Blake has left the country and presents an unexplained letter as evidence. His final question to Poole about the messenger leaves Blake's whereabouts and identity unresolved.
Key Events
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Marlowe Denies Blake's Presence — Marlowe insists that Blake has left the country and claims the matter is finished. Characters: Dr. Charles Marlowe / Mr. Edward Blake, Frederick Utterson
Location: Marlowe's house
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The Unposted Letter — Marlowe cites a letter from Blake, but its envelope was destroyed and lacked a postmark. Characters: Dr. Charles Marlowe / Mr. Edward Blake, Frederick Utterson
Location: Marlowe's house
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The Messenger Question — Marlowe asks Poole about the messenger who delivered the letter, leaving the explanation unresolved. Characters: Dr. Charles Marlowe / Mr. Edward Blake, Poole
Location: Marlowe's house