🧠 Chronology
Contradictions that hide in prose die on a timeline.
“Depend upon it, there is nothing so unnatural as the commonplace.”
⚠️ The common misconception A story can smuggle an impossibility past any reader. The same facts laid out in strict time order cannot hide it.
Time as a test of consistency
Much of detection is really temporal reasoning: could this person have been there then? An alibi is a claim about time and place, and it fails when two of its claims cannot both be true at once. Prose is the alibi\'s best friend — it lets events be told out of order, glossed, and separated by pages — while a timeline is its enemy, forcing every event onto one axis where overlaps become visible.
Reconstructing the sequence
The method is to extract each datable event, fix it as precisely as the evidence allows, and order them regardless of how the story tells them. Holmes does this constantly: the sailing dates in The Five Orange Pips, the train timings in Bruce-Partington, the supper menu that reveals who could have drugged the curry in Silver Blaze. The gap that stares back is usually the whole solution.
Why narrative order deceives
Writers — and liars — control the order of telling to control the reader\'s inference. Rearranging events into true chronological order strips away that control and often exposes a contradiction the narrative was busy hiding. It is one of the most powerful and least glamorous tools in the kit.
How to practise it
The Reichenbach Timeline takes any tangled narrative — a case, an incident report, a slice of history — and extracts an interactive chronology of who did what, when, sorted into strict order with each participant\'s thread traceable on its own. It is prose turned into the one shape contradictions cannot survive.
Practise it
Related techniques
Where Holmes uses it
Concrete moments from the canon — how the method actually plays out in the cases. Contains spoilers.
The yearly pearls, the date of Major Sholto's death, and the letter's timing only align on one theory: someone has been paying conscience-money since the day a secret was buried.
The whole solution is chronology: letter postmark to death date, port to port — the interval lengths themselves identify the vessel as sail, then as one ship.
Twelve miles out plus twelve back at a fresh horse's pace, but only Eyford scale — the journey was circular, and duration measured deception rather than distance.
Supper's curry is scheduling evidence: only someone who knew the menu could count on masking the opium, which pins the drugging inside the house before the night began.
The bell is the thief's own error, rung by a man surprised mid-theft; ringing time against corridor times shrinks the suspect field to whoever was already inside the geometry.
Whereabouts the night of the agent's death are sequenced against the letter's disappearance until only one messenger fits both windows.
The interrupted meal, the sent note, and the servant's flight are ordered into a single evening's clockwork, exposing a coordinated operation rather than a panic.
Train schedules and the swaying-point locations are matched to fix where and when the body left the roof, converting a railway map into a clock.
The nine-day rhythm is the master clue: symptoms recurring on a fixed cycle mean a scheduled cause, and matching the dates to the parcels finds the injections.