The American supernatural mystery based on the 1969 novel Hallowe'en Party by Agatha Christie – with the setting changed from the UK to Venice, Italy.

This film is set in eerie, post-World War II Venice on All Hallows' Eve and is a terrifying mystery featuring the return of the celebrated sleuth, Hercule Poirot.

Now retired and living in self-imposed exile in the world's most glamorous city, Poirot reluctantly attends a séance at a decaying, haunted palazzo. When one of the guests is murdered, the detective is thrust into a sinister world of shadows and secrets.

The film serves as the sequel to Death on the Nile (2022) and is the third one overall in which Branagh portrays the Belgian detective Hercule Poirot.

The ensemble cast also includes Kyle Allen, Camille Cottin, Jamie Dornan, Tina Fey, Jude Hill, Ali Khan, Emma Laird, Kelly Reilly, Riccardo Scamarcio, and Michelle Yeoh.

In addition, Hildur Guønadøttir, the acclaimed composer from Iceland who won an Oscar, Golden Globe® and BAFTA for Joker and an Emmy® and GRAMMY® for Chernobyl, and who most recently scored Tár and Women Talking, composed the score.

Branagh described the film as a "supernatural thriller", rather than a full-fledged horror film.

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