The 2025 adaptations
Book-to-film adaptations released in 2025 were shaped by one author more than any other: 4 separate Stephen King texts reached the screen inside 10 months, in The Monkey in February, The Life of Chuck in June, The Long Walk in September and The Running Man in November. Around that spine the year ran a literary autumn and a large streaming slate, and the useful thing about it is that the 4 King films are adapted from sources of wildly different length, which makes 2025 the clearest available demonstration that distance travelled depends less on the adapter's intentions than on how much text there was to begin with.
Why 2025 became a Stephen King year
2025 became a King year because his catalogue offers something almost no other author's does: short fiction with strong premises and no protective estate blocking development. King has long licensed short stories cheaply to student and first-time film-makers, and the effect over decades has been a permanent supply of projects at every budget level. The 4 features of 2025 came from 4 different points in that catalogue, spanning a 30 page short story, a novella, and 2 novels published under the Richard Bachman name in 1979 and 1982.
The length of the source is the single best predictor of how far the film goes. A short story has to be inflated, and inflation means invention. A 400 page novel has to be cut, and cutting means loss but rarely invention. Adapting a novella is the only case where the running time roughly matches the material, which is why novella adaptations so often look faithful without anyone trying especially hard.
King's story behind The Monkey runs to a few dozen pages, is told straight, and carries a single dread image. It has no second act because it does not need one.
Osgood Perkins builds a 98 minute feature around it and resolves the length problem by changing register into black comedy. Almost everything on screen after the premise is new.
How far each 2025 adaptation travelled
Measuring distance across the 2025 slate on plot, character, voice and theme puts the shortest sources furthest out and the novellas closest in, which is the reverse of what most viewers assume. The bars are this site's reading.
| Work | Book | Film | Distance |
|---|---|---|---|
| The Life of Chuck | 2020 | 2025 | |
| The Running Man | 1982 | 2025 | |
| Hamnet | 2020 | 2025 | |
| The Long Walk | 1979 | 2025 | |
| The Thursday Murder Club | 2020 | 2025 | |
| Frankenstein | 1818 | 2025 | |
| Mickey 17 | 2022 | 2025 | |
| The Monkey | 1980 | 2025 |
The Life of Chuck sits closest because Mike Flanagan kept the one formal decision that defines the novella: it is told in 3 acts running backwards, and the film runs them backwards too. Preserving a structural gimmick is the cheapest available way to look faithful, and it works, because structure is the thing readers actually remember.
The literary autumn and the return of Mary Shelley
The literary autumn of 2025 turned on 2 films with very different relationships to their sources. Hamnet, from Maggie O'Farrell's 2020 novel, took a book built almost entirely of sensory interiority and had to find external equivalents for grief that the prose carries internally. Guillermo del Toro's Frankenstein, released by Netflix in November, went back to Mary Shelley's 1818 novel rather than to the 1931 Universal film, which is a more radical decision than it sounds: nearly every screen Frankenstein for 90 years has adapted the movie tradition rather than the book.
Shelley's novel has no rights holder, so it can be adapted without permission and without payment. Public-domain adaptation is the quiet engine underneath a great deal of prestige film-making, and 2025 also carried it in the continued flow of 19th century material through cinemas alongside contemporary licensing deals.
What streaming took, and what cinemas kept
Streaming took the mid-budget adaptation in 2025 and cinemas kept the large one, a division that had been forming since 2024. Netflix released The Thursday Murder Club from Richard Osman's 2020 novel in August and Frankenstein in November, both of which would plausibly have been theatrical releases a decade earlier. Cinemas kept the franchise instalments and the awards contenders.
The consequence for adaptation itself is a change in running-time discipline. A theatrical release is priced against a schedule of screenings, which caps length; a platform release is not, which is why streaming adaptations have drifted longer and why they cut less. Cutting less is not the same as being closer to the book. A film that keeps every subplot and abandons the narrating voice has kept the least important half.
Romance in 2025, and where it went
Romance adaptation in 2025 belonged mostly to streaming and to the contemporary bestseller catalogues rather than to cinemas, with the theatrical exception being the return of Helen Fielding's Bridget Jones in February, taken from the 2013 novel Mad About the Boy. That film is worth noting because it solved the problem the whole genre struggles with: the source is a diary, and diary form gives a film a licensed excuse for voiceover that most first-person novels do not have. Where a romance adaptation has no such excuse, the interior life either goes on somebody's face or it goes nowhere. Comparing the 2025 romance titles with the 2024 slate shows the same pattern in both years, which suggests the constraint is structural rather than a passing fashion.