Five Holmes Cases You Can Solve in Five Minutes

The pleasure of a Holmes story is not the surprise of the reveal; it is the satisfaction of a clue placed early, glimpsed by the reader, and then made explicit by Holmes at the end. Doyle is generous with his clues. The deductions are rarely the work of a magician; they are the work of a careful reader who has been told everything and noticed enough.

Five short stories from the canon where a sharp reader, paying attention, can solve the case before Holmes does. Spoilers below - only read on if you want them, or if you have already read the story and want to see how the trick was made.

1. "The Adventure of the Speckled Band" - The Adventures, 1892

The setup: Helen Stoner's sister has died, in her bed, in an apparently locked room, with her last words being "the speckled band". Helen is now sleeping in the same bed.

The clue: Doyle places, on the same page, three details - a ventilator that opens into the next room rather than the outside, a bed bolted to the floor directly beneath the ventilator, and a bell-rope that does not ring any bell. Three structural anomalies in a single house.

The deduction: any one of those three details is suspicious. Three together, in a single bedroom, point to a single mechanism - something is being introduced into the room from above and using the bell-rope to descend. The "speckled band" is the band of a snake.

Doyle himself thought this was the best of the short stories. The clue is given on the second page of the case file; the reveal arrives ten pages later. The reader is told everything in advance.

2. "The Red-Headed League" - The Adventures, 1891

The setup: a pawnbroker named Wilson is paid four pounds a week to copy out the encyclopaedia, by an organisation that calls itself the Red-Headed League. The organisation is an obvious fiction. The question is what it is for.

The clue: Wilson's shop is in a street near a major bank. His assistant has worked for him for three months - exactly the period the League has been paying him to leave the shop daily. The assistant's knees are abraded.

The deduction: the assistant is digging a tunnel. The League exists only to remove Wilson from the premises during working hours. The bank is the target.

The whole structure is given to the reader by the time Holmes reaches the assistant's living quarters. The reveal is not a surprise; it is a confirmation.

3. "Silver Blaze" - The Memoirs, 1892

The setup: a famous racehorse has been stolen and its trainer murdered. The local suspect is an unknown stranger seen on the moor.

The clue: the dog. Specifically, the dog that did not bark. Holmes asks Inspector Gregory whether anything seemed out of the ordinary at the stable. The dog kennelled in the stable did not raise an alarm during the night.

The deduction: the dog only fails to bark for someone it knows. The thief was not a stranger. The thief was someone in the household.

The clue is, famously, presented to the reader as an absence. Doyle's confidence in his readers is what makes the trick work.

4. "The Adventure of the Norwood Builder" - The Return, 1903

The setup: a young solicitor named McFarlane is accused of murdering an elderly client, Jonas Oldacre, and burning the body in a woodpile. McFarlane stands to inherit Oldacre's estate; the case against him appears closed.

The clue: a thumbprint on the wall, placed there after the police's first inspection. McFarlane was in custody before the print appeared.

The deduction: the print was placed by someone who had access to McFarlane's thumbprint and access to the house. Oldacre is alive, hiding in a sealed room, and constructed the murder evidence himself.

The reader is given the chronology - first inspection clean, second inspection contains a print - three paragraphs before Holmes makes the inference. The case file dates the discovery exactly.

5. "The Adventure of the Dancing Men" - The Return, 1903

The setup: Hilton Cubitt's American wife is being terrorised by a cipher of stick figures appearing on his property. She refuses to explain it. The figures keep appearing.

The clue: the cipher repeats. Specific figure-patterns recur across multiple messages. Doyle gives the reader the full text of every cipher message Holmes sees, in the order Holmes sees them.

The deduction: any repeating cipher of single-character substitutions can be solved by frequency analysis. The most common single-character word in English is "I"; the most common three-character word is "the". A reader with a pencil can decrypt the second message before Holmes does.

The story works because Doyle gives the reader everything Holmes has and explicitly invites the comparison.