The Adventures of Sherlock Holmes study guide

Sherlock Holmes

Holmes investigates through observation and disguise, but Irene Adler's escape shows that his methods do not always succeed. His failure to protect an endangered heir contrasts with his active intervention in the household where Violet Hunter works.

Key chapters: 1, 5, 12

Dr. Watson

Dr. Watson is a married doctor, Holmes's friend, and a narrator who also takes part in investigations. His help ranges from assisting a false fire alarm to shooting a mastiff and treating Rucastle.

Key chapters: 1, 12

Lestrade

Lestrade brings Holmes into a killing investigation while remaining convinced that James kills his father. His suspicion of Flora Millar and search for Hatty's body show another investigation shaped by an initial theory.

Key chapters: 4, 10

Inspector Bradstreet

Inspector Bradstreet gives Holmes access to Boone's cell and makes secrecy depend on St. Clair abandoning begging. He later joins the engineer's case journey, bringing information about an existing investigation into counterfeit half-crowns.

Key chapters: 6, 9

Irene Adler

Irene Adler is a retired opera singer who marries Godfrey Norton and recognizes Holmes's trick. Her decision to keep the royal photograph for protection shows that the object offers security as well as leverage.

Key chapters: 1

Mary Sutherland

Mary Sutherland is a nearsighted typist with inherited income who seeks her missing fiancé and insists on remaining faithful. Her stepfather's impersonation of that suitor turns her devotion into a means of financial exploitation.

Key chapters: 3

John Clay

John Clay works cheaply as Jabez Wilson's assistant while digging a tunnel toward the bank during Wilson's copying hours. His arrest by Peter Jones ends an attempted robbery built around apparently helpful employment.

Key chapters: 2

Observation and evidence

The goose's sellers and the snowy footprints show how ordinary details can redirect an investigation away from an accusation. Holmes's challenge to the evidence against a son also suggests that reasoning requires testing an apparent explanation rather than simply accepting it.

Where it shows: chapters 4, 7, 11

Deceptive appearances

A well-paid copying job and an unusually generous offer of employment both disguise threatening arrangements. These cases suggest that an attractive opportunity deserves scrutiny, because the benefit offered to one person may serve a concealed purpose elsewhere.

Where it shows: chapters 2, 12

Power and protection

Irene Adler's decision to keep the photograph shows protection depending on possession of something powerful. The endangered heir's fate presents a harsher limit: seeking Holmes's help does not itself provide safety, even when the need for protection is clear.

Where it shows: chapters 1, 5

Devotion and exploitation

Mary Sutherland's faithfulness becomes vulnerable to a deception designed to keep control of her income. The coronet investigation also connects family accusation with a hidden affair, suggesting that intimate relationships can conceal motives that an outward account leaves unexplained.

Where it shows: chapters 3, 11

The shared photograph

The photograph threatens the King of Bohemia's planned marriage while offering Irene Adler protection. It works as a sign of how the same evidence can create vulnerability for one person and security for another.

Chapter 1

Typed letters

The letters connect the vanished fiancé to the deception surrounding Mary Sutherland. They work as traces of a manufactured identity, suggesting that a disguise can leave evidence even while concealing its source.

Chapter 3

Five orange pips

The orange seeds turn an ordinary object into a warning of death. Their association with the heir's failed search for protection suggests the reach of a threat that Holmes cannot stop.

Chapter 5

Sherlock Holmes, Chapter 1. Holmes addresses Watson during the royal photograph investigation. The distinction shows that noticing something is not the same as examining it for useful evidence.

Sherlock Holmes, Chapter 4. Holmes speaks while challenging the evidence against a son in his father's death. His warning suggests that apparent clarity can encourage an investigator to stop questioning too soon.

Sherlock Holmes, Chapter 5. His later inability to protect him gives the statement a painful contrast between recognizing danger and preventing harm.

Sherlock Holmes, Chapter 12. Holmes explains the purpose behind Violet Hunter's employment. The line turns an unusual job into evidence of coercion, showing that an offered role can conceal another person's captivity.