Murder at the Grand Alpine Hotel

Lucy Foley, a #1 New York Times best-selling author known for modern closed-circle thrillers like The Guest List, brings her signature style to the world of Agatha Christie in Murder at the Grand Alpine Hotel. Foley was hand-picked by the Agatha Christie Estate to write this, the first authorized full-length Miss Marple continuation novel. Set in 1950 at a luxurious and isolated hotel in the Swiss Alps, the mystery follows the murder of an ambitious politician found dead in a gondola. When a sudden snowstorm traps the glamorous international guests, Miss Marple must uncover the killer hiding among them.

Blending a classic-era detective premise with the contemporary psychological subjectivity of multiple first-person points of view, the novel explores how secrets of the past can violently erupt into the present. The story examines themes of Women Subverting Societal Expectations, showing how underestimated women can operate in plain sight, and Respectability as a Cloak for Corruption, which exposes the hypocrisies of the elite characters. Ultimately, the plot is driven by The Long Shadow of Wartime Betrayal, as the murders are revealed to be a long-delayed reckoning for atrocities committed during World War II.

Content Warning: The source material and guide feature depictions of racism, religious discrimination, graphic violence, illness or death, sexual content, emotional abuse, physical abuse, substance use, addiction, cursing, and suicidal ideation.

Plot Summary

In the winter of 1950, paid companion Diana Glass travels with her employer, the recently widowed Mrs. Bantry, and Mrs. Bantry’s friend, Miss Jane Marple, to the exclusive Grand Alpine Hotel in the Swiss Alps. They join a glamorous international set of guests, including the ambitious politician Anthony Narracott and his demure wife, Catherine. The atmosphere is tense. 

A jar of rat poison appears on the Narracotts’ cocktail cabinet, which Anthony dismisses as a prank. But he is visibly disturbed by the unexpected arrival of Sylvia Sinclair—a flamboyant Hollywood actress—and Bruno Crane—a brutish racketeer—with whom he has strained histories. When a disheveled young medical student named Charlie Levitt begins aggressively stalking Anthony, the sense of unease increases. The next morning, Anthony’s body is found in a hotel gondola; an empty coffee flask beside him suggests poisoning.

As the death is discovered, a heavy snowstorm isolates the hotel and traps the guests with a potential killer. A French police detective, Inspector Christophe Moreau, is staying at the hotel and takes charge of the investigation. He enlists Miss Marple as an advisor and Diana as a secretary. The initial investigation focuses on who had the opportunity to tamper with Anthony’s flask, which was left at the reception area to be filled with coffee. Suspicion falls on several guests with clear motives. Catherine and Sylvia, who had a loud, public argument over Anthony the night before—culminating in Catherine throwing a martini in Sylvia’s face—provide each other with alibis, claiming they were both at the hotel’s remote spa during the important time. Bruno Crane is a prime suspect due to a loud argument the previous night in which he and Anthony discussed an “S pill,” or suicide pill, after which he violently ransacked Catherine’s room searching for something. Charlie Levitt is revealed to be Anthony’s illegitimate son, whose sense of rejection presents revenge as a possible motive.

The situation escalates with the murder of Bruno Crane during a hotel-wide toboggan competition, providing cover for the killer’s movements. Lured to a remote copse of trees by a note promising that “SILENCE IS GOLDEN,” Bruno is found bludgeoned to death. Sylvia is seen drinking in the hotel bar, while Catherine watches the race beside Miss Marple, seemingly giving them both solid alibis. Shortly after, Inspector Moreau is also killed, pushed from the balcony of Mrs. Bantry’s room after being summoned by a forged note pretending to be from Miss Marple. Following his death, Miss Marple takes on responsibility for the investigation. She realizes that Diana is living under cover, and Diana confesses she is a former Special Operations Executive agent who served in the French Resistance during the war. Anthony and Bruno murdered the others in Diana’s Resistance cell to steal a cache of Nazi gold that they then hid in a mountain hut near the hotel. Diana followed them to the Grand Alpine to expose their treason and recover the stolen gold.

Miss Marple realizes the truth behind the murders. The killers are Catherine Narracott and Sylvia Sinclair who are in fact secret lovers. They had manufactured a public feud to make them appear as credible alibis for one another. For Anthony’s murder, Sylvia disguised herself as one of the hotel’s resident nuns to poison the coffee flask unnoticed at in the reception area. Catherine created Sylvia’s alibi by impersonating her in public, although Miss Marple notices flaws in the plan, exposing the truth. Sylvia, secretly an expert skier, killed Bruno Crane while Catherine sat with Miss Marple. Finally, Catherine murdered Moreau—who was not a detective but Kristoph Mauer, a Swiss banker sent to broker the gold deal—after they realized he was also after the treasure.

After committing the murders and retrieving the gold, Catherine and Sylvia execute their escape plan. Sylvia dyes her distinctive blond hair black, and they disguise themselves as nuns, skiing over the mountain pass into Italy under the cover of night. Diana pursues them, determined to reclaim the gold in the name of her fallen comrades. On the Italian side of the pass, Catherine spots Diana and shoots her, triggering an avalanche that appears to sweep Catherine and Sylvia to their deaths. 

However, Miss Marple, anticipating their entire plan, reveals she believes they have survived. Deducing their ultimate destination as Istanbul—a place Sylvia had mentioned—she has already contacted her old friend Sir Henry Clithering at Scotland Yard to arrange for an interception. Two days later, as Catherine and Sylvia board the Simplon-Orient Express in Venice, Italian police storm their compartment and arrest them. A month later, a recovering Diana visits Miss Marple’s home in St. Mary Mead. Diana, in possession of the photographic evidence she needs to expose Anthony Narracott’s treason, feels a renewed sense of purpose. She tells Miss Marple that she doesn’t want a safe life, but a useful one, a sentiment that the elderly sleuth understands perfectly.