The Memoirs of Sherlock Holmes XI Summary

Summary

Dr. Watson recounts a case taken up in the July after his marriage: Percy Phelps, a young Foreign Office clerk and former schoolmate, arrives at Briarbrae, Woking, in a state of collapse after a secret naval treaty entrusted to him is stolen from his office. Phelps describes how he copied part of the French-language document late at night, left the room briefly to fetch coffee, and returned to find the original gone though the copy remained; the commissionnaire’s wife, a mysterious bell, and an absence of tracks compound the mystery. Holmes quickly examines the facts, questions witnesses, and sets inquiries in motion in London, including an advertisement seeking the cab that might have dropped the thief.

Holmes balances investigations in town—interviewing Scotland Yard’s Forbes and Lord Holdhurst—with on-the-ground surveillance at Woking. After a nocturnal break-in at Phelps’s bedroom window and a threatened attack, Holmes decides to stay locally and watch. He instructs Miss Harrison to lock the sick-room from outside and await events while Watson escorts Phelps to London. Holmes conducts a hidden vigil in the grounds at night, observes Joseph Harrison (the sister’s brother) remove a small cylindrical packet from beneath a loose board under the carpet, struggles with him, retrieves the stolen paper, and reveals that Joseph had stolen the treaty for profit. Holmes explains how apparent clues and overabundant, distracting detail hid the essential facts: opportunity, intimate knowledge of the office and house, and Joseph’s motive. The case closes with the document restored and the moral ruin of a trusted relative exposed.

Key events

1. Percy Phelps recounts theft of the secret naval treaty from the Foreign Office.
2. Holmes inspects the site, questions Forbes and Lord Holdhurst, and posts a cab advertisement.
3. A nighttime attempt on Phelps’s life at Briarbrae heightens stakes.
4. Holmes keeps Miss Harrison confined in the sick-room and conducts a night vigil.
5. Holmes surprises Joseph Harrison retrieving the hidden papers and recovers the treaty.
6. Holmes explains how motive, opportunity and misdirection concealed the true culprit.

Analysis

This chapter establishes a classic Holmes investigation built on deduction, close observation, and the pruning of distracting evidence. Thematically, it contrasts public duty and private failing: a state document’s safety is ruined not by foreign spies but by domestic greed and betrayal. Holmes’s methods—isolating relevant facts, testing hypotheses, staging controlled experiments (the vigils and the instruction to lock the door)—demonstrate his scientific approach to crime, and the narrative shows Watson as sympathetic chronicler and foil, both admiring and puzzled by Holmes. Structure-wise, Doyle layers two concentric mysteries: the disappearance of the treaty and the bedroom intrusion, allowing Holmes to link them and reveal they stem from the same human motive. Symbolically, small objects (the bell, the little cylinder of paper, the moss-rose) serve as pivots: the bell signals the theft, the cylinder embodies national consequence, and the rose momentarily humanizes Holmes, reminding readers that his rationalism coexists with aesthetic appreciation. The chapter also foreshadows recurring Doyle motifs—family betrayal, the danger of seemingly trivial domestic details, and Holmes’s willingness to manipulate events (keeping Miss Harrison in the room, letting Joseph reclaim the paper) to produce a decisive revelation—while preserving suspense by withholding decisive action until Holmes’s night watch yields the coup de théâtre.

Important quotes

“If this paper remains blue, all is well. If it turns red, it means a man’s life.”

Sherlock HolmesHolmes tests a chemical sample on Watson's arrival to dramatize the stakes and to show his scientific approach.

“The copy was there, and the original was gone.”

NarratorPhelps recounts discovering that the original secret treaty had vanished from his desk though the copy remained, the central fact that launches the investigation.

“What a lovely thing a rose is!”

Sherlock HolmesHolmes pauses from deduction to admire a moss-rose, a brief personal moment that contrasts his scientific mind with an appreciation of beauty.

Characters in XI

• Dr. John Watson
• Sherlock Holmes
• Mrs. Hudson
• Percy Phelps
• Joseph Harrison
• Miss Harrison
• Mr. Forbes
• Dr. Ferrier
• Mrs. Tangey
• Charles Gorot
• Lord Holdhurst
• commissionnaire
• policeman