Cat Among the Pigeons

The story opens on the first day of summer term at Meadowbank, one of England's most prestigious girls' schools. Miss Bulstrode, the formidable headmistress who built the school from nothing, greets parents with iron charm. Her loyal co-founder and mathematics teacher, Miss Chadwick, assists alongside Miss Vansittart, the poised history and German teacher. Among the new arrivals are Princess Shaista, a 15-year-old from the Middle East presented as a cousin of the late Prince Ali Yusuf of Ramat, and Julia Upjohn, a plain, intelligent girl brought by her mother. While chatting with Miss Bulstrode, Mrs Upjohn glances out the window and exclaims at recognizing someone, but Miss Bulstrode's attention is diverted to another matter. By the time she turns back, Mrs Upjohn has moved on to discussing wartime intelligence work. Miss Bulstrode senses she missed something important but dismisses the feeling. An ominous authorial note warns that events already in motion will bring murder to Meadowbank.

A flashback reveals the source of the coming trouble. Two months earlier in the Palace of Ramat, Prince Ali Yusuf faces an imminent revolutionary coup. He entrusts his private pilot and old school friend, Bob Rawlinson, with a bag of precious stones worth approximately three quarters of a million pounds. Bob visits his sister Joan Sutcliffe's hotel room while she is out and conceals the jewels inside the hollowed-out handle of his niece Jennifer Sutcliffe's tennis racquet, sealing them with plasticine. He plans to relay the hiding place's location to a contact at the British Embassy, but rioting prevents their meeting. That afternoon, Bob flies Ali out of the country, and both men die when their plane crashes in the mountains. Unknown to Bob, a woman in the adjacent hotel room observes him through a mirror's reflection as he works on the racquet and notes the Sutcliffe luggage labels.

Six weeks later in London, Colonel Pikeaway, a senior intelligence officer, pieces together the scenario: Bob likely hid the jewels among his sister's belongings. He dispatches an agent to inform Mrs Sutcliffe of Bob's death and search her luggage, but nothing is found. Pikeaway plants a young agent under the cover name Adam Goodman as a gardener at Meadowbank to monitor Princess Shaista in case the jewels surface through her. He also identifies the woman in the adjacent hotel room as Señora Angelica de Toredo, a cabaret dancer performing in Ramat. Mr Robinson, an enigmatic international fixer, visits Pikeaway to confirm the theory and warn that multiple dangerous parties are converging on the jewels.

The term proceeds with tension beneath the surface. Miss Bulstrode debates her retirement, weighing whether to name Miss Vansittart or the younger, more dynamic English teacher Eileen Rich as her successor. New staff include Ann Shapland, Miss Bulstrode's efficient secretary; Mademoiselle Blanche, an ineffectual French mistress; and Miss Springer, an abrasive Games Mistress who guards the Sports Pavilion possessively. Early in the term, Jennifer and Julia swap tennis racquets because Jennifer dislikes the balance of hers. They exchange their adhesive name tapes, so the racquet containing the hidden jewels, now bearing Julia's name, passes into Julia's possession.

One night, the matron spots a torchlight in the Sports Pavilion. She and Miss Chadwick hurry outside and hear a gunshot. Inside they find Miss Springer dead, shot through the heart. The door was opened with a key, not forced, and no weapon is found. During the investigation, Eileen Rich tells Inspector Kelsey she senses someone at the school is wrong, like a cat hidden among the pigeons. Adam reveals his intelligence credentials to Kelsey, and they agree the Pavilion must hold something someone is desperately seeking.

A well-dressed woman with a slight American accent approaches Jennifer, claiming her godmother sent a new racquet and wants the old one back for restringing. Jennifer eagerly accepts the replacement and surrenders the racquet she is carrying. Because of the earlier swap, she hands over Julia's old racquet, not the one containing the jewels. Julia finds the exchange suspicious, noting that the stranger's story about restringing does not match which racquet actually needed it. She likens the trick to "new lamps for old" from Aladdin, and her suspicions are confirmed when Jennifer's godmother denies sending any racquet.

During a weekend when Miss Bulstrode is away, Shaista is collected by a liveried chauffeur 45 minutes before the genuine car arrives. Miss Chadwick realizes Shaista has been kidnapped and contacts Kelsey. That night, unable to sleep, Chadwick sees a light in the Pavilion, rushes out, and finds Miss Vansittart dead, struck on the back of the head. Ann Shapland has an unshakeable alibi: She was dining at a London nightclub.

As parents withdraw their daughters, Julia examines the racquet in her room. She pries off the leather cap and digs through the plasticine to find loose rubies, emeralds, sapphires, and diamonds. She hides the stones, escapes the school grounds the next morning, and takes a train to London, presenting herself at the flat of Hercule Poirot, the famous Belgian detective. Poirot confirms the jewels are genuine, deposits them in a bank, and telephones Miss Bulstrode, deliberately announcing the valuables are secured so anyone listening at the school will know the stones are no longer on the premises.

Poirot confers with Kelsey, Adam, and the Chief Constable. He deduces that the Shaista who attended Meadowbank was an imposter, a young French actress substituted for the real princess in Switzerland before the term began. The fake Shaista's "kidnapping" was her staged exit when her uncle's imminent visit threatened to expose her. Meanwhile, Mademoiselle Blanche, emboldened by something she witnessed on the night of Springer's murder, attempts blackmail and is killed that evening, struck from behind with a sandbag. A British consular official locates Mrs Upjohn on a bus journey through Anatolia, Turkey, and arranges her flight home.

Poirot assembles the staff for the climactic confrontation. He explains the jewels' history and the imposture, then builds a seemingly damning case against Eileen Rich, who admits she was in Ramat the previous term. At the critical moment, Mrs Upjohn enters the room and points directly at Ann Shapland, identifying her as a dangerous wartime espionage agent known by the code name "Angelica." Ann springs up with a concealed pistol. Miss Chadwick throws herself in front of Miss Bulstrode and is shot. Adam and Kelsey subdue Ann.

Poirot reveals the full truth. Ann leads a double life as a respected secretary and a hired operative under assumed identities. She is in Ramat disguised as the cabaret dancer Angelica de Toredo, occupies the room next to Mrs Sutcliffe's, and watches Bob hide the jewels. She kills Springer, who catches her searching the racquets at night, and later kills Blanche, who tries to blackmail her. Miss Vansittart, however, is killed by Miss Chadwick. Consumed by jealousy over Miss Bulstrode's plan to name Vansittart as successor after decades of Chadwick's own devotion, Chadwick strikes Vansittart with a sandbag in a half-conscious act she immediately regrets. Eileen Rich's secret proves innocent: She went to Ramat to hide a pregnancy, and the child was born dead. Miss Bulstrode confirms her partnership offer to Rich, telling her the pregnancy changes nothing.

Miss Chadwick, gravely wounded, confesses to killing Vansittart. Miss Bulstrode forgives her, saying Chadwick saved two lives, and Chadwick dies peacefully. In a final chapter, the jewels reach their rightful owner: Alice Calder, Ali Yusuf's secret English wife, and their young son Allen. Alice asks that one emerald be given to Julia, the girl who found the jewels, and Mr Robinson arranges the sale and a trust for the family's future.