Leonard is the vicar of St. Mary Mead who struggles with his parish's diverse personalities and a constantly broken clock. A witty, highly educated man with a compassionate nature, he tries to manage local disputes while observing the village drama. He is deeply in love with his younger wife despite her untraditional approach to her duties.

Griselda is the vicar's lively wife, twenty years younger than her husband. She openly avoids domestic chores like organizing church teas and relies on sarcastic humor to deflect criticism. Her highly sociable nature often clashes with the expectations placed upon a clergyman's spouse.

Miss Marple is an elderly, white-haired spinster who lives next door to the vicarage. Though her neighbors often dismiss her as a harmless gossip, she possesses a razor-sharp mind and an encyclopedic knowledge of human behavior. She gardens and birdwatches with binoculars to monitor the neighborhood activities.

Colonel Protheroe is a wealthy local magistrate who hands down severe sentences from the bench. He actively bullies his family and constantly suspects others of financial mismanagement. His abrasive personality ensures nearly everyone in St. Mary Mead holds a grievance against him.

Anne is Colonel Protheroe's second wife, an elegant woman noticeably younger than her husband. She wears tight clothes without pockets and projects a calm exterior that hides deep internal desperation. Her intense desire to escape her domineering marriage leads her into a risky situation.

Lawrence is an attractive artist who rents the vicarage studio to paint portraits, keeping a Mauser pistol from the war on hand. He is highly popular and easily wins the trust of the local servants with his persuasive personality. His presence at the vicarage places him at the center of the village drama.

Lettice is Colonel Protheroe's teenage daughter from his first marriage. She leaves her yellow beret in the vicar's study and feigns a dreamy absent-mindedness to avoid responsibilities. Despite her vague demeanor, she sharply resents her father's restrictions and harbors a deep dislike for her stepmother.

Dr. Haydock is the local physician in St. Mary Mead and a close friend of the vicar. He believes criminal behavior stems from biological or glandular conditions rather than moral failings. He maintains strong protective instincts over his patients and friends.

Mrs. Lestrange is an elegant, highly secretive woman who recently moved into a village home. She shuts herself away and ignores knocks at her door from village gossips, making her a primary subject of local speculation. Her unexpected arrival hides a tragic personal history.

Mr. Hawes is the new curate at the St. Mary Mead vicarage. He suffers from encephalitis lethargica, leaving him reliant on strong medications and prone to severe personality shifts. He exhibits deep paranoia regarding the church accounts and the subsequent murder investigation.

Inspector Slack is the local police detective assigned to the murder case at the vicarage. True to his name ironically, he is highly energetic but notably abrasive, rudely dismissing the vicar's statements about his fast-running clock. He relies on strict routine rather than intuition.

Colonel Melchett is the Chief Constable of the county and a member of the upper class. He frequently stops by the vicarage to complain about the local women over a drink. He prefers a paternalistic approach to the investigation and heavily relies on the vicar for local context.

Dr. Stone is an archeologist currently excavating a barrow on Colonel Protheroe's property. He loudly argues with the Colonel over the land rights and access to the dig site. He presents himself as an absent-minded academic dedicated entirely to his historical research.

Miss Cram is a young, unmarried secretary working for Dr. Stone. She sits in ways that scandalize the older ladies and boldly questions everyone about the murder. She represents the modern professional woman, which causes raised eyebrows among the traditional village elders.

Dennis is Leonard Clement's teenage nephew who lives at the vicarage. He treats the local murder as a thrilling adventure rather than a tragedy, actively searching for clues. He holds a romantic infatuation with Lettice Protheroe that clouds his judgment regarding her behavior.

Mary is the maid and cook at the vicarage who consistently serves poorly prepared meals. The Clements keep her on because finding good domestic staff is difficult in the village. Her personal life frequently intersects with the local criminal element, making her defensive during the investigation.

Raymond West is Miss Marple's visiting nephew and a successful writer from London. He holds an arrogant view of small-town life, believing the city is the only place for true drama. He views the village murder primarily as amusing material for his future literary work.

Mrs. Price Ridley is a wealthy, older woman in St. Mary Mead known for her demanding nature and love of gossip. She frequently contacts the police over minor inconveniences and inserts herself into the local drama, viewing every unusual event as a personal affront.