Walk onto any working set in the morning and you will see them tucked into back pockets, clipped to call sheets, and curled in the hands of actors mouthing lines under their breath. They are called sides, and the word covers two related things at once. The first is the small bundle of script pages reproduced for the day, holding only the scenes being shot before wrap. The second is the short selection of pages a casting office sends out so performers can read for a role. In both cases the idea is the same: take the enormous, secret, unwieldy thing that is a full screenplay and cut it down to the few pages a person actually needs in front of them right now. The whole industry runs on these excerpts, and the way they are made, chosen, and sometimes disguised reveals a quiet logic at the heart of how television gets cast and shot.
Sides take the enormous, secret, unwieldy thing that is a screenplay and shrink it to the few pages a person actually needs right now.
Half-Size Pages, Full-Size Reasons
Production sides are the working paper of the shooting day. Rather than hand every crew member a full script, the production office prints only the scenes on the schedule, often reduced so two script pages fit on one sheet, which is why they are sometimes folded into a back pocket and pulled out between setups. They typically travel with the call sheet, the daily document that lists who is needed and when, so an actor can glance from one to the other and know both the scene and the plan. The reduced format is not an accident. It keeps the day's material portable, focuses attention on what is actually being filmed, and avoids scattering complete copies of the screenplay across a set where dozens of temporary hands pass through.
Secrecy is the other reason sides exist in this form. A full script is among the most guarded objects in a production, because a leaked ending can spoil a season or sink a marketing plan built around surprise. Distributing only the pages being shot limits how much of the story any one person ever holds at once, and watermarked or numbered copies let a production trace a leak back to its source. Many sets now lean on secured digital distribution as well, pushing the day's pages to an app that can be revoked rather than a stack that can be photographed and forwarded. Whether on paper or a screen, the principle is constant: give people exactly what they need to do the work in front of them, and not the whole story behind it.
Choosing the Audition Sides
Audition sides are a different craft of selection. When a role is being cast, the casting director chooses a short passage, often a scene or two, meant to show what the part demands. A good selection is a kind of test designed on purpose: it might foreground a sudden emotional turn, a long stretch of fast dialogue, a moment of stillness, or the specific chemistry two characters are supposed to share. The pages an actor receives are therefore not random; they are picked to expose whether a performer can deliver the exact thing the role lives or dies on. Sometimes the same scene is read by dozens of hopefuls in a single day, which is why casting offices come to know a passage so intimately that they can hear, almost immediately, who has found something in it.
Because scripts are secret, audition sides are also a place where productions actively protect the plot. A well-known practice is the use of decoy or dummy sides: scenes written specifically for auditions, with invented dialogue, altered character names, or placeholder situations that never appear in the finished show. High-profile projects are reported to swap in generic material precisely so that a leaked audition page reveals nothing real about the story. An actor may read for a major part using a scene from an entirely different production, or lines drafted only to gauge tone and range. It can be disorienting to perform pages that will never be filmed, but the logic is sound, since the audition needs to measure the performer without handing the world a map of the plot.
Bringing Cold Pages to Life
Whatever their origin, sides confront the actor with a stubborn problem: a few pages, stripped of context, that must somehow feel like a whole person in motion. The performer rarely knows the full arc, the backstory, or what happens after the scene ends, and with decoy sides may not even be reading the real role. The craft, then, is to build a believable inner life from fragments, to make reasonable choices about who this person is and what they want, and to commit to those choices fully enough that the reader on the other side of the table forgets the pages are an excerpt. Skilled actors treat sparse sides as an invitation rather than a limitation, filling the silence around the words with intention the page only implies.
The hardest version of this is the cold read, where sides arrive with little or no time to prepare and must be performed nearly on sight. Here the skill is less about polish than about instinct: scanning a page quickly for its turns, finding the relationship buried in the dialogue, and staying loose enough to react as if the words were occurring to the character for the first time. Casting professionals often say they are not looking for a flawless recitation but for a specific, living point of view, the sense that a real person is behind the lines. That is the quiet art the sides demand, on set and in the audition room alike: to take a handful of pages, half-size or invented or barely glimpsed, and make them breathe as if they were the only pages that ever mattered. Note: this essay is AI-authored and flagged for human fact-check, particularly specific names, dates, and attributions.