Shared ignorance: The hidden engine of suspense

​Learn about ‘shared ignorance’ in crime fiction and thrillers, and how writers use missing information to build suspense, mislead readers and deliver powerful twists.

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In this post …

• What is shared ignorance?
• Shared ignorance and psychic distance
• How shared ignorance works
• What the restrictions are
• The discipline required to preserve integrity
• 5 practical principles for you to follow
• Why shared ignorance is effective

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What is shared ignorance?

Being in a state of shared ignorance means that a character and a reader both lack the same information at the same time. You’ll see it in play where a story focuses on a single viewpoint character throughout the novel – when we’re in just one character’s head.
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I like the term ‘shared ignorance’ because it captures the deep emotional connection between the reader and the viewpoint character. Whatever they don’t know, we don’t know. Whatever they miss, we miss. Whatever path they go down, we go down. 

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Shared ignorance and psychic distance

Because the character and reader experiences are aligned, the psychic distance between them is very narrow. The reader is effectively inside the character’s perspective.

Instead of observing the mystery from a distance, the reader becomes an active participant in solving it.
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Together, reader and viewpoint character share the process of investigation, misdirection, discovery and revelation, plus all the emotional stuff that comes with it – bafflement, anticipation, tension and relief. 

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How shared ignorance works

At its core, shared ignorance is about controlling information – who has it, who doesn’t and when it’s revealed.

Critically, we as readers, are never one step ahead as a result of having learned something elsewhere in the story that our main character doesn’t know. We take the journey with them.

Let’s imagine that our viewpoint character is an investigator called Harris.

• In Chapter 3, Harris finds a coded note but she lacks the key to understand it. The reader sees the same note, so both assume a meaning; and both will later come to understand that their assumption was incorrect.
• In Chapter 10, Harris speaks to another character. It’s only in Chapter 55 that she remembers the conversation and considers the significance of a particular phrase. And so it’s only then that the reader will realize its relevance too.
• In Chapter 16, Harris meets a doctor who appears to be helpful and credible. With no contradictory information available, both she and the reader accept their version of events – until new evidence exposes the deception in Chapter 43.
• Throughout the novel, individual incidents seem isolated because key linking information is missing. Only when new knowledge emerges do both Harris and the reader recognize a broader connection that was invisible before.

​These kinds of limitations ensure that the reader discovers the truth alongside the investigator, rather than ahead of them.

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What the restrictions are

If a story is tightly bound to the perspective of a single character who knows no more than the reader, then anything outside of that character’s awareness or interpretive ability is effectively off-limits. For example:

• The true sequence of events (until discovered): The narrative can’t show what actually happened at the crime scene in full, only partial or mistaken reconstructions.
• The antagonist’s private actions: There can be no cutaways to what the culprit is doing elsewhere unless the viewpoint character learns about it later.
• Hidden motives or inner thoughts of others: Other characters’ intentions remain inferred, not confirmed, unless they’re revealed through dialogue or evidence.
• Reliable meaning of ambiguous clues: A clue can be described, but its true significance can’t be explained before the character understands it.
• Events occurring offstage and unreported: Anything that happens beyond the character’s reach stays unknown unless someone brings it back into the narrative.
• Contradictions the character hasn’t noticed: The narrative can’t highlight inconsistencies that the viewpoint character misses.
• Future consequences or outcomes: There should be no foreshadowing that depends on facts the character doesn’t have.
• Objective truth that conflicts with the character’s beliefs: The narrative can’t step outside the character’s perspective to correct them in real time; errors remain until revised.
• Key evidence not yet encountered: Crucial documents, objects or testimony can’t be previewed or described before the character finds them.
• The final solution before the reveal: The narrative can’t assemble the full, correct explanation ahead of the character without breaking the shared state of discovery.

These constraints mean that the reader solves the mystery alongside the investigator.

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The discipline required to preserve integrity

Taking a tight character-bound approach obviously needs discipline to ensure that the integrity of the plot doesn’t collapse.

In addition to considering the restraints above, never forget that the narrative mustn’t reveal more than the viewpoint character can reasonably perceive or infer, and equally mustn’t withhold what they already know.

So, if the character misses obvious clues, draws conclusions that clearly aren’t supported, or remembers things that weren’t previously reported, the illusion of a shared journey will break down, and the reader’s trust will go with it.
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At its core, this is a question of fairness. The reader should always feel that, given the same information, they could have reached the truth alongside the investigator.

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5 practical principles for you to follow

Here are five practical principles to help you manage shared ignorance during the writing or editing process:
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• Perspective: Stick to what the viewpoint character can realistically experience – eg their internal awareness and the external observable information available to them.
• Imperfection: Let characters be confidently wrong. Mistakes can enhance a plot, as long as they’re reasonable mistakes rather than ones that will make the reader groan.
• Clues: Seed relevant clues early so that later revelations feel earned rather than overly convenient.
• Fair play: Don’t hide information that the viewpoint character should have access to.
• Timing: When information is revealed matters as much as what is revealed. Spread the various pieces of the puzzle throughout the novel so that the answers lie with multiple characters and events.

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Why shared ignorance is effective

Shared ignorance is effective because it taps into how people behave. When we’re presented with incomplete information:

• we instinctively try to fill the gap between what we know and what we want to know.

• we form temporary conclusions based on information that confirms our suspicions, and overlook details that don’t fit.

​Crime fiction and thrillers exploit these tendencies, and stories that operate through a lens of shared ignorance provide a reading experience that feels active rather than passive. We’re following a story, and we’re trying to solve its conundrums.

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Summing up

The most compelling stories create a world in which characters and readers don’t see the answers until exactly the right moment.
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If you’re writing from the perspective of a single character, shared ignorance will keep your readers turning the pages, second-guessing themselves and chasing down the solution. 

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About Louise Harnby

Louise Harnby is a line editor, copyeditor and proofreader who specializes in working with crime, mystery, suspense and thriller writers.

She is an Advanced Professional Member of the Chartered Institute of Editing and Proofreading (CIEP) and co-hosts The Editing Podcast.

• Get in touch: Louise Harnby | Crime Fiction & Thriller Editor
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• Discover: Resources for authors and editors​

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