How do you deliver a presentation you did not build, with little time to prepare? Skim it quickly for anything you can turn into a story, an image, or a real example, and plan to talk past the content rather than read it. If you were only going to read it word for word, you could have simply emailed it instead. This happens more often than people admit: a colleague is out, a deck lands in your inbox an hour before the meeting, and you are the one standing up.
Why this matters (and what most executives get wrong)
The instinct in this situation is to treat unfamiliarity as an excuse to read closely off the slide, since you genuinely do not know the material as well as whoever built it. That instinct is understandable and also the wrong move. Reading someone else's slides word for word signals to the room that you are not actually delivering anything, you are just relaying it, and the room can tell the difference immediately.
What most executives get wrong in this situation is assuming the goal is to fake full mastery of material they only just received. It is not. The goal is to connect the audience to the material in a real way, even without deep expertise, using the same tools that work in any presentation: stories, examples, eye contact, and genuine delivery rather than narration.
If you are only going to read it to them, you could have sent it in an email. Standing up means you are there to add something the page cannot.
The 3-step way to handle an unfamiliar deck
Step 1: Skim for what can become a story or example
Read through the deck quickly with one specific question in mind: where can I use an image, tell a brief story, or drop in a real example instead of just stating the point. You do not need deep expertise to spot these opportunities, you just need to look for them deliberately.
Step 2: Use the magic phrase to buy yourself room
The transition for example gives you a natural way to slow down and connect a point to something concrete, even material you just learned yourself. It also signals to the room that you are engaging with the content, not simply reciting it.
Step 3: Use the blank-screen technique to talk instead of read
Where the technology allows it, black out the slide and talk directly to the room for a moment, rather than standing there narrating what is already visible on the screen. This forces you into real delivery instead of reading, and it usually feels more natural than trying to read unfamiliar material smoothly.
The mistake most executives make
The mistake is trying to hide unfamiliarity by staying glued to the script on the screen, which is exactly the behavior that exposes the unfamiliarity most clearly. A room can tell within a minute whether a presenter is engaging with material or just reading it cold, and reading cold reads as less credible, not more careful. Connecting with the room using the tools you already have, storytelling and eye contact, works even when the content itself is new to you.
If you get a deck with almost no lead time, spend whatever minutes you have doing exactly one thing: marking two or three slides where you can drop in a personal example or a brief story, even a small one. That short list is worth more than trying to memorize the whole deck.
Case study: the last-minute substitute who outperformed the original speaker
A mid-level manager I worked with was asked to deliver a colleague's client presentation with roughly ninety minutes of notice, on a topic outside her usual area. Rather than trying to master the entire deck, she skimmed it for two places where she could drop in her own relevant example from her own work, and planned to talk past the rest of the slides rather than read them. The client feedback afterward specifically praised how conversational and confident the presentation felt, with no indication that the presenter had received the material only that morning.
Reading it cold versus talking past it
| Element | Reading it cold | Talking past it |
|---|---|---|
| What the room sees | Narration, low engagement | Real delivery, some ownership |
| Preparation needed | None, and it shows | A few minutes, well spent |
| What it signals | You are relaying content | You are engaging with content |
What to do next
The next time you are handed someone else's deck on short notice, spend your available minutes marking two or three places for a story or example rather than trying to memorize the whole thing. If you want to build this skill before it becomes a real emergency, get a quick quote. For more on avoiding the trap of reading slides, see don't read your slides to the audience and how to interact with your audience even on unfamiliar material.
You do not need to know the deck cold. You need to connect the room to it.