What changed in the movie, title by title: 10 in total. Tap a cover to open it. Titles you haven't marked as read stay locked so nothing gets spoiled.
In the book, Andrew dies of thirst after days locked in the attic. In the movie, he gets out, attacks Nina and dies when Millie pushes him down the stairs.
source ↗The book has no china: Millie is punished for leaving books out of place, and Andrew makes her hold heavy books. In the movie, she breaks one of his mother's plates and has to cut herself with the shards.
source ↗In the book, Enzo has his own backstory, a sister killed by her husband in Italy, and a romance with Nina. He is the one who talks Nina into going back for Millie. In the movie, Cece does that.
source ↗In the book, the investigator is the father of Andrew's former fiancée, who vanished. In the movie, it's a young policewoman whose sister was once engaged to him.
source ↗Lionsgate greenlit the adaptation in January 2026. Paul Feig returns to direct, with Sydney Sweeney, Michele Morrone and Kirsten Dunst in the cast. It opens December 17, 2027.
source ↗Enzo Accardi, the Italian groundskeeper from the first book, turns up again and helps Millie dig into what's going on at the Garricks'.
source ↗The story skips ahead more than a decade. Millie is now a social worker with two kids, Ada and Nico, and buys a house on a Long Island cul-de-sac.
source ↗Detective Benito Rodriguez, whom Millie met in The Housemaid's Secret, is back as a family friend and helps crack the case.
source ↗The novella came out in November 2024, after the third book, but takes place before it. The author says you can read it between books 2 and 3 or after book 3.
source ↗In the US, the Poisoned Pen Press paperback only arrived on June 23, 2026, at 128 pages. The audiobook is read by Lauryn Allman and Edoardo Ballerini.
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