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The Casebook of Sherlock Holmes · Chapter

The Adventure of the Creeping Man explained

Holmes and Watson investigate the strange behavior of Professor Presbury, a renowned physiologist whose devoted wolfhound, Roy, has twice attacked him.

What happens

Holmes and Watson investigate the strange behavior of Professor Presbury, a renowned physiologist whose devoted wolfhound, Roy, has twice attacked him. The professor's assistant, Trevor Bennett, reports that Presbury has become secretive, violent, and has made unexplained trips abroad. His daughter, Edith, describes a terrifying incident where she saw her father's face at her second-floor window, despite no ladder being present. Holmes notes the significance of specific dates and plans to confront the professor directly.

Themes in this chapter

  • The Rational vs. the Irrational

    The professor's inexplicable behavior and the dog's attacks challenge logical explanation, contrasting Holmes's rational methods with the apparent irrationality of the events.

  • Obsession and Its Consequences

    Professor Presbury's infatuation with a younger woman drives him to secretive and violent actions, disrupting his family and professional life.

  • Deception and Appearance

    The professor's outward shell masks his inner transformation, and the household lives in fear of impending danger, highlighting the gap between appearance and reality.

Characters to notice

  • Sherlock Holmes

    Investigates the strange case of Professor Presbury, theorizing about the connection between dogs and family moods.

  • Dr. Watson

    Summoned by Holmes to assist; accompanies him to Camford to confront the professor.

  • Trevor Bennett

    Professional assistant to Professor Presbury and engaged to his daughter; brings the case to Holmes.

  • Professor Presbury

    The elderly physiologist whose bizarre behavior and physical changes alarm his household.

  • Miss Presbury

    The professor's daughter; reports seeing her father's face at her second-floor window at night.

  • Roy

    The professor's wolfhound, who has twice attacked his master, reflecting the household's turmoil.

Key passages

  • Come at once if convenient⁠—if inconvenient come all the same.

    Holmes insists Watson join him immediately, regardless of convenience.

    Holmes's characteristic urgency in summoning Watson.

  • Why does Professor Presbury’s wolfhound, Roy, endeavour to bite him?

    Holmes questions why the professor's loyal dog now attacks him.

    The central mystery that sparks Holmes's investigation.

  • It was no delusion, Mr. Holmes. Don’t deceive yourself by thinking so.

    Miss Presbury insists her sighting of her father at the window was real.

    Her testimony underscores the eerie and inexplicable nature of the case.