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The Red Thumbmark · Chapter

The Red Thumbmark explained

Dr.

What happens

Dr. Jervis reunites with his old friend Dr. Thorndyke and is introduced to the case of Reuben Hornby, who is accused of theft based on a thumbprint found at the scene. Thorndyke begins his meticulous examination of the thumbprint evidence, while Jervis interviews Miss Juliet Gibson to gather background information. The chapter establishes the central mystery and the forensic approach that will be used to solve it.

Free preview opens on this chapter — companions, themes, and character notes appear beside the text.

Narrative arc

Story tension across the book.

SetupEscalationAftermathClimax
  • Setup
  • Escalation
  • Breaking point
  • Aftermath
  • Closing

This excerpt is the dramatic climax because it presents the emotional and psychological peak of Jervis’s inter…

Full beat labels and climax notes unlock in the reader.

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Themes in this chapter

  • Forensic Science and Evidence

    Thorndyke's detailed examination of the thumbprint highlights the role of scientific analysis in legal proceedings.

  • Observation and Deduction

    Thorndyke's methodical approach to the evidence exemplifies the power of careful observation and logical reasoning.

Characters to notice

Key passages

  • “The case is a very simple one, but it has some interesting features.”

    Thorndyke remarks that although the case appears straightforward, it contains noteworthy elements.

    Thorndyke's initial assessment of the Hornby case.

  • “The thumbprint is the only evidence against him.”

    The sole piece of incriminating evidence is the thumbprint found at the scene.

    Jervis explains the central evidence in the case.