Story Structure — 5 Plot Phases
A Sentence and a Secret Escape
Geoffrey is condemned for a murder he did not commit. After his appeal fails, he uses the invisibility drug with help from Helen and Dr. Griffin.
Key Events
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Geoffrey Is Convicted — Geoffrey is sentenced to death for his brother's murder, which he did not commit. Characters: Geoffrey Radcliffe
Location: Court
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An Escape Plan Forms — Geoffrey, Helen, and Griffin plan to use the drug if the appeal fails. Characters: Geoffrey Radcliffe, Helen Manson, Dr. Frank Griffin
Location: Unspecified meeting place
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The Appeal Fails — Geoffrey's appeal fails, leaving his execution imminent. Characters: Geoffrey Radcliffe
Location: Court
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Griffin Visits Geoffrey — Griffin visits Geoffrey shortly before the prisoner vanishes. Characters: Geoffrey Radcliffe, Dr. Frank Griffin
Location: Prison cell
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Geoffrey Vanishes — Geoffrey disappears from his cell as his execution approaches. Characters: Geoffrey Radcliffe, Dr. Frank Griffin
Location: Prison cell
Hiding from the Law
Geoffrey disappears and takes refuge in a cottage with Helen's help. Sampson begins to suspect Griffin's connection to the invisible man case, while Geoffrey fears the drug's effects.
Key Events
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Sampson Suspects Griffin — Sampson recalls the earlier invisible man case after hearing Griffin's name. Characters: Inspector Sampson, Dr. Frank Griffin
Location: Unspecified
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Clothes Await Geoffrey — Griffin leaves clothes for Geoffrey at a place arranged in advance. Characters: Geoffrey Radcliffe, Dr. Frank Griffin
Location: Pre-arranged place
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Helen Hides Geoffrey — Helen shelters Geoffrey in a cottage while he remains invisible. Characters: Geoffrey Radcliffe, Helen Manson
Location: Cottage in the woods
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The Drug's Danger — Geoffrey and Griffin confront the risk that the drug could cause madness. Characters: Geoffrey Radcliffe, Dr. Frank Griffin
Location: Cottage in the woods
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Spears Is Promoted — Spears's sudden promotion at the mining operation arouses Geoffrey's suspicions. Characters: Geoffrey Radcliffe, Willie Spears
Location: Radcliffe mining operation
A Lead at the Mine
Geoffrey grows suspicious of Spears's sudden promotion and forces him off the road. Spears identifies Richard Cobb as the murderer.
Key Events
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Geoffrey Forces Spears Off Road — Geoffrey forces Spears's car off the road to make him reveal what he knows. Characters: Geoffrey Radcliffe, Willie Spears
Location: Road
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Cobb Is Named — Spears tells Geoffrey that his cousin Richard Cobb committed the murder. Characters: Geoffrey Radcliffe, Willie Spears, Richard Cobb
Location: Road
The Drug's Deception
Helen and Griffin fear the drug is harming Geoffrey and secretly make him sleep. Geoffrey pretends the invisibility has ended, then escapes to pursue Cobb.
Key Events
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The Drug Takes Its Toll — Helen and Griffin see signs that the drug is adversely affecting Geoffrey. Characters: Geoffrey Radcliffe, Helen Manson, Dr. Frank Griffin
Location: Cottage in the woods
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Geoffrey Is Drugged — Helen and Griffin secretly drug Geoffrey to make him sleep. Characters: Geoffrey Radcliffe, Helen Manson, Dr. Frank Griffin
Location: Cottage in the woods
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A False Recovery — When Geoffrey wakes, it appears the drug's effects were temporary, but he is pretending. Characters: Geoffrey Radcliffe, Helen Manson, Dr. Frank Griffin
Location: Cottage in the woods
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Geoffrey Escapes Again — Geoffrey reveals the apparent recovery was a ruse and escapes. Characters: Geoffrey Radcliffe
Location: Cottage in the woods
Confession and Survival
Geoffrey confronts Cobb, and the chase leaves Geoffrey wounded and Cobb fatally injured. Cobb confesses, and a blood transfusion helps Griffin save Geoffrey.
Key Events
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Geoffrey Pursues Cobb — Geoffrey goes after Cobb after learning that he committed the murder. Characters: Geoffrey Radcliffe, Richard Cobb
Location: Unspecified
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The Chase Turns Fatal — A chase follows the confrontation; Sampson's bullet hits Geoffrey and Cobb falls from a coal wagon. Characters: Geoffrey Radcliffe, Richard Cobb, Inspector Sampson
Location: Near a coal wagon
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Cobb Confesses — Fatally injured after falling from the wagon, Cobb confesses to the murder. Characters: Richard Cobb
Location: Near a coal wagon
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Geoffrey Is Saved — Employees donate blood; the transfusion makes Geoffrey visible and enables Griffin to operate and save him. Characters: Geoffrey Radcliffe, Dr. Frank Griffin
Location: Doctor's care
The owner of a coal mining operation, falsely imprisoned for fratricide, takes a drug to make him invisible, despite its side effect: gradual madness.