How to Read a Script (Format, Breakdown, Prep)

Read a script three times: once for the story, once for your character, and once to break down each scene you are in. Learn the format first (scene headings, action lines, character cues, parentheticals) so the page tells you where you are and what is happening. Then respect the words: we asked 25 casting directors whether you can change the dialogue, and most said stick to what is written unless you are invited to play.

How is a screenplay laid out?

Every screenplay uses the same building blocks. According to Final Draft, they are:

  • Scene heading (slugline): in capitals, starting INT. or EXT. (interior or exterior), then the location and the time of day, such as INT. KITCHEN - NIGHT.
  • Action: what we see and hear on screen. Important off-screen sounds are written in capitals.
  • Character: the speaker's name in capitals on its own line, above their dialogue.
  • Parenthetical: a short note in brackets under the name about how a line is delivered. Writers are told to use them sparingly.
  • Dialogue: the spoken lines, set in the middle of the page.
  • Transition: an instruction between scenes, such as CUT TO:.

A rough rule: one page is about one minute of screen time.

What do V.O., O.S. and CONT'D mean?

These are extensions written after a character's name. V.O. (voice over) means the voice is heard but the character is not speaking in the scene, such as narration or a phone line. O.S. (off screen) means the character is in the scene's space but out of shot, like a voice from the next room.

CONT'D (continued) is added when the same character keeps talking after an action line interrupts them, or when their speech runs onto the next page, as Final Draft's help pages explain. It is a formatting device, not a note to pause or change your read.

How is a TV script different from a film script?

The page format is largely the same. The structure is not. Final Draft's guide to TV scripts says an hour-long episode usually has a teaser and then four or five acts, each starting on a new page and lining up with commercial breaks. Sitcoms often open with a cold open, run in two acts, and may finish with a short tag. Films usually follow three acts and resolve by the end, while a TV story carries on across episodes.

The practical difference for actors: Kym Jackson notes that for a guest or co-star audition you will rarely see the full episode script. In her experience, a full TV script usually only comes with a pilot. For films, it is often worth asking.

Should actors read the whole script?

Yes, whenever you can get it. Actor and teacher Anthony Brandon Wong told us that reading the whole thing tells you your character's super objective, the tone, the backstory and every reference in your scenes to other people, places and events.

Ask your agent or manager for it every time. On big studio films you may hit a non-disclosure agreement and only get sides, so make the most of what you have. See what sides are for the audition version.

How do you read a script for your character?

First read: just the story, like an audience member. Second read: your character. Kym's shortcut when time is tight is to search the script for your character's name, so you see every scene you are in and every time someone talks about you.

Look for clues in the action lines, in how others describe you, and in how you react under pressure. Then ask why. Read everything casting sent too: Kym's first audition rule is not to miss a detail that was right there in the email.

How do you break down a script?

A script breakdown turns reading into a plan. For each scene you are in, write down:

  1. Where and when: from the scene heading. Day or night, inside or out, and where this falls in the story.
  2. What just happened: casting director Kahleen Crawford said actors often fail to ask what happened before and after their scene. If you only have three pages, ask.
  3. What you want, and what is in the way: your objective and obstacle in the scene.
  4. The beats: each point where the thought or tactic shifts.
  5. The subtext: what you mean but don't say. Kahleen said looking for subtext happens surprisingly rarely.

Once you book, Kym asks for the latest draft straight away, because scripts are revised in the weeks before a shoot. For the character side of the work, see character analysis.

Do you have to follow the stage directions?

Not always. Anthony Brandon Wong said it depends on the material. Some writers place every action deliberately as part of the character's journey. Others are looser, and an action like "she cries" may not be essential.

His test: is it a turning point? If a character points a gun and the other says "don't shoot me", you have to fulfil it. For grey-area beats, copying the direction exactly can limit what you bring to the moment.

Can you change the words in a script?

We asked 25 casting directors whether actors can improvise or paraphrase in an audition. Only Victoria Burrows and Rachel Sutton were relaxed about it, and even Victoria likes one take exactly as written. Almost everyone else said stick to the page, or ask first.

The reasons were consistent. Josh Einsohn said all a writer hears is that you think the writing isn't good enough. Meg Morman said an added line changes the rhythm and emotional effect of the scene. Deborah Barylski warned that in comedy one extra syllable can kill a joke. Ask first, and save your ideas until you have booked the job.

The exceptions: Lisa Zambetti said a small button before or after the scene is the safest place to play. Kahleen Crawford said it is fine to ask whether you can adjust a phrase that wasn't written for your accent.

When should you start learning the lines?

As soon as you have the pages. Kym's view is that your preparation only works once the words are muscle memory, so you can listen instead of reaching for the next line. She learns them neutrally first, without locking in a delivery. More in how to memorise lines.

What casting directors told us

  • Say the words as written. Of the 25 casting directors we asked, only two were relaxed about paraphrasing.
  • If you want to play, ask first. Most will tell you how married they are to the text.
  • A small button at the very start or end of a scene is the safest place for anything extra, and in comedy even that is risky.
  • Ask what happened before and after your scene, and look for the subtext.
  • Treat the writer as someone in the room. Often they are, and they may have a say in casting.

Quick answers

What is a slugline in a script?

A slugline, or scene heading, is the line in capitals that starts each scene. It says interior or exterior, the location and the time of day, such as INT. KITCHEN - NIGHT.

What does CONT'D mean in a script?

CONT'D means continued. It appears after a character's name when they keep speaking after an action line interrupts them, or when their dialogue runs onto the next page.

What is the difference between V.O. and O.S.?

V.O. (voice over) is a voice heard from outside the scene, such as narration. O.S. (off screen) is a character who is in the scene's location but out of shot.

How many pages is a minute of screen time?

The usual rule of thumb is that one screenplay page is about one minute of screen time.

Can actors change the lines in an audition?

Usually not. Most of the 25 casting directors we asked said to stick to the words as written unless you are invited to improvise, and to ask first if you want to play.

Should I read the whole script before an audition?

Yes, if you can get it. It tells you the tone, your character's overall objective, the relationships and the backstory. For TV guest roles you often only get sides.

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