Character guide

Roger Sheringham

major

Also known as Mr. Sheringham, Mr. Roger Sheringham, Sheringham

Roger Sheringham arrives at Layton Court as a guest of the jovial host, but his novelist's habit of observing everything — greenfly, footprints, human evasions — quickly turns him into an amateur detective. He is exuberant, self-consciously eccentric, and constitutionally incapable of leaving a puzzle alone, even when his meddling ruffles the police and his friend Alec. His restless curiosity drives the investigation's early and middle stages, as he assembles suspects and theories with more confidence than evidence.

Alexander Grierson

major

Also known as Alec, Alexander Watson, Mr. Alexander Grierson, Mr. Grierson, Watson

Alec Grierson is a well-off young Oxford cricketer invited to Layton Court partly as a match for Barbara Shannon, and he brings Roger along as his friend. Where Roger leaps to conclusions, Alec hangs back — gently steering him off false trails and trying to stop him putting his foot in it with suspects. His steady presence matters because he is both the reader's sanity check and the emotional thread linking the house party to the outside world.

Mrs. Plant

major

Also known as X Mrs. Plant, XX Mrs. Plant, XXIII Mrs. Plant

Mrs. Plant keeps the household running and knows more about the comings and goings at Layton Court than she lets on. A stray strand of hair, assumed at first to be hers, becomes a crucial pivot in Roger's reasoning — proof that a second woman was in the library that night. Her role matters because she embodies the domestic knowledge that the gentlemen amateurs keep overlooking, and her secrets shadow the middle of the investigation.

Major Jefferson

supporting

Also known as Poor Major Jefferson, Jefferson, Major Jefferson, Inspector Mansfield, Master Jefferson

Major Jefferson is the guest who helps break down the library door and then endures Roger's suspicion with grim patience. He married Lady Stanworth in secret because her brother-in-law would have destroyed the match, giving him both a powerful motive and a painful reason to conceal the truth. His refusal to pretend or flatter makes him central to the middle arc, where Roger must decide whether the most obvious suspect is really the guilty one.

Lady Stanworth

supporting

Also known as Stanworth, old Stanworth, friend Stanworth

Lady Stanworth presides over Victor Stanworth's summer parties with aristocratic composure, but her past is held hostage by secrets he extracted years ago. She chose marriage to his brother over her father's ruin, and even after her father's death the threat of exposure kept her obedient. Her hidden marriage to Major Jefferson gives the investigation its most tangled motive, and her restraint makes her one of the most quietly consequential figures in the house.

Victor Stanworth

supporting

Also known as Mr. Victor Stanworth, Mr. Stanworth, Victor, old Mr. Stanworth

Victor Stanworth is a wealthy bachelor who rents a grand house each summer and fills it with entertaining young guests, playing the jolly old gentleman to perfection. Underneath the red-faced bonhomie lies a man who collects secrets and uses them — as Lady Stanworth knows to her cost. His death is the puzzle the whole book turns on, and the contradictions in his character are what make the question of who killed him, and why, so difficult to answer.

Barbara Shannon

supporting

Also known as Barbara, young Barbara

Barbara is one of the cheerful young people Mr. Stanworth has gathered for his summer party, and her mother, Mrs. Shannon, is an old friend of Lady Stanworth's. She is lively and direct, with a characterful little face and a habit of cutting short the men's bloodthirsty talk with a shiver and a change of subject. Her presence keeps the social texture of Layton Court alive, and her alertness to the people around her makes her a quiet counterweight to the men who think they are doing the detecting.

John Prince

supporting

Also known as Prince, Master Prince, Mr. Prince, Mr. John Prince, the late lamented Mr. John Prince

Prince is the murdered man found in the library, and the discovery of his body shatters the country-house gaiety that Mr. Stanworth had so carefully arranged. His death is announced with brutal brevity, and the reactions around him—Lady Stanworth's calm, the guests' shock—reveal how little anyone truly knew him. What matters for the early arc is not who he was but what his death exposes: a household full of secrets, evasions, and motives that Roger Sheringham must begin to untangle.

Mrs. Shannon

minor

Mother of Barbara Shannon, present at Layton Court.

Mary Plant

minor

Also known as Mary

Daughter of Mrs. Plant, a maid at the house.

Graves

minor

Also known as friend Graves

A servant or local man who assists in the investigation.

Doctor Matthewson

minor

Also known as Doctor, Dr. Matthewson

Local doctor who examines the body and provides medical insight.

Mr. Wetherby

minor

Also known as a Mr. Wetherby, Wetherby

A visitor or acquaintance mentioned in the investigation.

Miss Shannon

minor

Alternate reference to Barbara Shannon, likely a formal address.