Jane Marple’s Investigation
A Murder Is AnnouncedJane Marple’s modest observations turn a seemingly incoherent police file into a connected explanation of identity, motive, and murder.
increasing
Bearing strength in each event
decreasing
A Letter to the Police

A Small Piece of Evidence
An Observer at the Hotel
While staying at the Royal Spa Hotel, Jane Marple notices that Rudi Scherz altered a cheque. She recognizes the modest, practiced dishonesty of someone who steals small sums rather than attempting an implausibly violent robbery.
A Question of Character
Her knowledge of ordinary human behavior makes Rudi’s supposed transformation into an armed killer seem unlikely. She writes to George Rydesdale with her observation.
A Fall Guy Theory

The Wrong Picture
What Witnesses Could See
Jane Marple notices that the guests could not clearly see a masked man behind a powerful flashlight. Their later descriptions may be reconstructed from what they saw after the lights returned.
An Alternative Crime
She proposes that Rudi Scherz was hired to perform a sham hold-up and that someone else fired the shots. The theory gives Craddock permission to distrust the apparent simplicity of the case.
The Village Method

Recognizing People
An Unfamiliar Community
Jane Marple explains that post-war villages contain newcomers whose histories are known only through their own accounts. Familiar manners and respectable appearances therefore cannot establish a person’s identity.
Quiet Investigation
She uses ordinary conversation to ask about acquaintances and family histories. The method appears like harmless gossip but can reveal gaps in a fabricated background.
A List of Clues

The Pattern Forms
A Private Inventory
Before disappearing, Jane Marple writes down lamp, violets, aspirin, the cake, affliction, iodine, pearls, Letty, Berne, and old-age pensions. Each word recalls a separate detail from the investigation.
Connections Across Time
The list links the electrical trick, Dora’s death, Charlotte’s medical history, and the sisters’ names. Jane’s skill lies in seeing that small observations belong to the same pattern.
The Trap in the Kitchen

A Dangerous Test
A False Accusation
Jane Marple helps arrange a scene in which Mitzi claims to have seen Letitia with the revolver. The accusation is false in detail but close enough to the truth to make the killer fear exposure.
A Voice from the Cupboard
Hidden nearby, Jane mimics Dora Bunner’s voice as Charlotte tries to drown Mitzi. Sergeant Fletcher witnesses the attempt, and the performance ends in an arrest.
The day after the shooting
At lunch with the police officials
During Jane Marple’s first days at the Vicarage
After Amy Murgatroyd’s murder
During the final police confrontation