Screenwriting and television

How to adapt a novel into a screenplay

August 16, 2026 · The StoryProp team

You have the novel, and someone wants it as a film. Three decisions do most of the work, and all three land before a scene gets written: which single story inside the book is the film, which characters merge into one, and how the reader's access to a mind becomes behavior a camera can see. The arithmetic is what forces them. Austin Film Festival's 2026 competition rules put a feature screenplay at roughly 90 to 120 pages, while the book behind it runs 80,000 to 100,000 words for commercial fiction on the 2026 agent guidance collected by the Manuscript Academy — roughly 270 to 330 printed pages at the Steve Laube Agency's 300-words-per-page conversion. The instinct that follows is always the same: treat the script as a compression of the book, keep the plot, trim the fat, protect the good lines. What that produces is the loyal, lifeless adaptation, where everything is present and nothing is alive. Adaptation is not translation; it is re-conception in a medium with different physics.

Before the craft, the transaction, because it sets the clock. A novel is optioned far more often than it is bought: a producer pays for an exclusive window to set the film up, and the real money arrives only if it goes. The one published floor near this is the Writers Guild's — a signatory company may option literary material from a professional writer for a period of up to 18 months at no less than 10 percent of the applicable minimum, and must pay at least that again for each renewal. Against the $125,023 high-budget minimum for an original screenplay excluding treatment in the Guild's schedule that ran to 1 May 2026, that is about $12,500 for a year and a half. The familiar claim that an option is ten percent of the purchase price is published nowhere, and the explainers that repeat it contradict each other; the floor is the only rule, and everything above it is negotiated. Adapting also has its own pay grade: the Guild's minimum for a non-original screenplay including treatment, on a film budgeted at $5 million or more, was $147,920 against $170,655 for an original, before the 2026 agreement raised minimums by 1.5 percent on 2 May 2026. At the floor, working from a book pays about thirteen percent less than originating. None of that decides the film, which is governed by physics rather than paperwork.

Two facts about those physics generate every problem that follows. A reader gives a novel many hours across weeks, alone, with unlimited access to the inside of a head. A film gets a couple of continuous hours, in a room where nobody can turn back a page, and shows only the outside of people. Time and access: that is the whole difference, and it is enormous.

The arithmetic of compression

A screenplay runs about a page a minute, and the rule is slightly generous. When the industry analyst Stephen Follows matched 2,520 US Letter feature screenplays to the runtimes of the finished films in March 2026, the mean came out at 1.1 pages per runtime minute — a page is nearer 55 seconds than 60 — and only 18.2 percent of scripts landed inside the narrow band where the rule actually holds. His median script ran 119 pages against a median film of 108 minutes. So: about two hours of dramatized story, inside a ceiling that the places you submit to specify. Austin Film Festival asks for 90 to 120 pages; the Academy Nicholl Fellowships now hold a hard minimum of 80 and a hard maximum of 125, tightened from the looser ranges older advice still quotes. A novel staged scene for scene would blow through that ceiling long before the book ended. Most of the book will not be in the film — not trimmed, absent. Deciding what is absent is the first real act of authorship in an adaptation, and it happens before you write a slugline.

The wrong method is proportional trimming: every subplot shortened, every character at quarter strength, the whole thing undernourished. The right method is choosing a spine. A novel usually contains several stories braided together, and the film is one of them. Imagine the demo manuscript here as a full novel: Mara comes back to sell her mother's house and finds her brother Daniel already living in it. That book might also carry a hundred pages on her marriage collapsing elsewhere and a thread about the town's shuttered mill. All three are the book; one is the film. The others become pressure applied from offscreen — a phone she does not answer, a boarded window behind a scene — or they go.

Combination follows from the same arithmetic. Two characters serving one function become one. Three arguments spread across two hundred pages become a single argument carrying all three charges, and the scene is denser for it. This is how the medium concentrates, not a cheat. A blunt test: if you cannot say what a character does that nobody else could do, they are a merge candidate.

Before cutting anything, make the other list. Ask anyone who has read the book what they would miss if it were gone. The answers are rarely plot events. They are images, reversals, one exchange, the texture of a place. That list is what the adaptation is protecting, and it will overrule many tidy structural decisions later.

Interiority has to become behavior

The camera cannot film a thought. A novel's largest advantage — following reasoning nobody in the room can see — is precisely what does not convert. Say the book has Mara reflecting that she rehearsed this conversation for ten years, and that no rehearsal included him being kind. There is no way to shoot that sentence. There is a way to dramatize it. She arrives with the speech loaded and starts it, and Daniel hands her coffee in the chipped cup and asks about the drive, and she stops, because kindness was not in the script she wrote. She tries twice more, then says a smaller, worse version to a stranger at a gas station. The thought has become a structure of failed attempts, and it plays.

Interiority converts along a few reliable routes: decision under pressure, because choices are legible and reasoning is not; physical behavior with objects, which is why the chipped cup is worth more to a film than any amount of remembering; asymmetric dialogue, where someone answers a different question than the one asked; and arrangement, since cutting from one scene to the next is itself a judgment. Voiceover is a legitimate fifth route and a notorious dumping ground — with a personality of its own it earns its place, but announcing what a character visibly feels means no conversion was made. The test, for voiceover and for interiority pushed into dialogue, is the same: cut the line, and if the moment plays better without it, it was interiority in costume.

Point of view collapses

Novels use point of view as a rationing device. Close third person means you know what she knows and no more, and much of a book's suspense comes from that restriction. The camera has no such discipline: it shows the room, and as easily the other room. Say the book withholds a fact — Daniel has been paying the property taxes for years. The first time a film cuts to him alone at a kitchen table with receipts, the audience is permanently ahead of Mara. Three honest options: never stage a scene she is not in; relocate the reveal so its late arrival is dramatized rather than delayed; or take the irony deliberately and change the engine from what happened to when she finds out. Each is a different film, so choose before you outline.

The harder version is a novel carried by voice. If the book's real pleasure is the narrator's mind — the jokes, the digressions, the particular way she is wrong about herself — losing the voice loses the engine, and what remains is a plot that was never the point. Those adaptations need an equivalent pleasure invented for the screen: a performance built to carry it, a visual grammar, a game played with the audience.

What to betray to stay faithful

Fidelity to incident and fidelity to effect conflict constantly. Nobody experiences your accuracy; an audience experiences a sequence of feelings in a fixed order. An adaptation that reproduces every event and loses the effect is unfaithful in the only way that registers. One that rearranges hard and lands the effect gets called faithful by people holding the book.

The instrument for deciding is a single sentence about what the story is underneath its plot — not the logline, the argument. Write it, keep it visible, measure candidate scenes against it. Scenes that do not serve it go, beloved ones included. Invented scenes that serve it are permitted and usually necessary, because prose can dispatch a confrontation in a clause and a film cannot, and because prose can end on reflection while a film has to end on something happening.

That last one is a common fault line. Suppose the novel ends with Mara alone on a train, thinking about a sentence her mother wrote in a cookbook margin. Fine ending for a book; no ending at all for a film. The script converts it into an action carrying the same meaning: she leaves the cup on the counter, or she takes it. At the level of incident that is a betrayal; at the level of theme it is the most faithful move available. Events serve the argument, not the reverse.

Remapping the structure

Chapters are not scenes. A chapter can hold a week, three locations, and a flashback; a scene is continuous time in a continuous place. Do not outline the film off the table of contents. Beat-map the novel first — one line per unit of change, phrased as a turn rather than a location. Not “Mara goes to the house” but “Mara plans to sell the house within the week and finds Daniel living in it.” The beat map is your quarry, not the film's shape.

Build the shape from scratch out of that quarry. It will start later than the book does; novels can afford a patient entry and films pay for one immediately. The middle will need a turn where the novel had a long tidal stretch, and the material usually exists already, two hundred pages from where you need it — relocation, not invention. How a film's shape gets built, in sequences and turning points, is its own subject, covered in how to outline a movie; if the format itself is new, learn the elements from how to write a screenplay for beginners.

The passes, in order

A sequence that survives contact with a real book: read it once as a reader, marking only what you would miss. Write the one-sentence argument. Beat-map the whole novel without judging it. Fix the three big things — spine, merges, point-of-view rule — as decisions written down rather than impressions carried around. Outline the film from the beats, then draft scenes, expecting the outline to be wrong in two places.

Adaptations rot in a particular way. Halfway through the draft nobody remembers which version of a fact is operative: the mother died in March in the novel and the week of the sale in the script; Daniel had a key in chapter four and no key in the outline. A running record of what is canon from the book and what changed for the film is the difference between a second draft and an archaeology project. It is also how a contested spine gets settled — outline Mara's film and Daniel's film in parallel, since the answer is obvious once both exist, and keeping the two outlines in separate copies stops either version from contaminating the other. StoryProp holds the book's canon and the script's departures as records the agent reads before it drafts, keeps every pass so a reverted choice can be compared and restored rather than reconstructed, and writes semantic screenplay elements with professional pagination and clean FDX and Fountain export instead of prose styled to look like a script; the AI screenwriting software page shows what that looks like.

The book already exists. Nothing done to it in the script can damage it, and no amount of reverence will make the film good. An adaptation is a reading of a novel, and the readings worth watching are argumentative ones — where somebody decided what the book was about and then had the nerve to cut everything that was not it.

Adapting well means holding two versions of every fact — what the novel says and what the script decided — without losing track of which one is live. StoryProp keeps those decisions as records the drafting reads from, so the changes you made on purpose stay made, and what you agreed to is written down rather than remembered.

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