Anomalies
Every Keep the Door Locked anomaly and fake visitor, with the exact tells that give them away — camera glitches, wrong story details and odd behavior real guests never show.
Introduction
Anomalies are the heart of Keep the Door Locked. An anomaly is a fake visitor — a creature that imitates a human person well enough to knock on your door, ask for help, and trick you into opening. They are almost never distinguishable at a glance; instead they give themselves away through tells: small details in their story, odd behavior, or things that only appear on camera. This category is the complete anomaly database. It lists the anomaly types players have reported, explains how to spot each one, teaches the detection methods that work every time — especially camera checks and night vision — and walks you through the tells that separate a real person from a creature wearing a person's shape.
Anomaly Tells Quick Reference
| Tell Category | Example Tell | Detection Method | Risk |
|---|---|---|---|
| Story Mismatch | Claims oven smoke / leaking faucet that do not exist | Check room on camera | High |
| Camera-Only | Appears only on CCTV or night vision | Cycle cameras | High |
| Voice Flip | Voice switches to a demonic gravelly tone | Listen carefully | Medium |
| Body Distortion | Taller than normal, head snaps | Night vision | Medium |
| Missing Evidence | Claimed people or objects absent on camera | Verify on monitor | High |
Anomaly Types & Tells
Story-Twisting Anomalies
Story-twisting anomalies are the game's smoothest liars, inventing emergencies that simply do not exist: an oven that is supposedly smoking, a faucet that is leaking, or a pet that has changed color overnight. Their whole script is built to rush you, because a panicked player skips the careful camera checks that would expose the fraud. They describe room details as if describing the truth, but every claim is fabricated to trick you into opening the door for something that was never really there.
Camera-Only Anomalies
Camera-only anomalies live almost entirely inside the monitor, refusing to look normal in the world you actually see. They may fail to appear on the standard view while showing up clearly under night vision, or stand in the frame with no face at all. Because they hide between the camera modes, you can only catch them by cycling through every angle and comparing what each one shows. They are common late in the night, and they punish players who glance at a single view before deciding.
Voice-Flip Anomalies
Voice-flip anomalies betray themselves purely through sound, which makes them one of the easiest tells to miss when you play on low volume. A visitor begins speaking in a normal, reassuring tone, then mid-sentence their voice drops into a deep gravelly growl that no human throat should produce. The flip is unmistakable once you have heard it, and it is a reliable reason to refuse the door immediately. Wearing headphones and listening closely during dialogue is the only way to catch it consistently.
Body Distortion Anomalies
Body distortion anomalies mimic human proportions closely enough to pass a quick glance, but the details do not survive closer inspection. The figure may stand noticeably taller than a normal person, snap its head at an angle necks should not bend, or move limbs in directions that human joints simply cannot follow. Night vision makes most of these distortions obvious, so compare the visitor against the door frame and the room interior before you trust what your eyes first report.
Missing Evidence Anomalies
Missing evidence anomalies are built around proof that never arrives. The visitor claims a companion is waiting behind them, that an emergency is unfolding in the room, or that something on camera should be visible to you—yet the monitor shows nothing at all when you check. The absence on screen is one of the strongest signals in the whole game, because the fraud exists only in the story being told to you. Verify the claimed person or object on camera before responding to any request.
Core Mechanics
Anomalies work by copying human behavior — they knock, they speak, they ask for help. What makes them detectable is that the copying is imperfect. Their stories describe room details that do not exist (the oven smoke, the leaking faucet, the cat's color). Their voices sometimes flip from normal speech to a deep, gravelly demon tone that no real person produces. On camera, they behave differently from real visitors: some only render in night vision, some press their faces against the lens, and some appear with distorted proportions or missing facial features. The module information gathered from player reports constantly expands this list; treat the database as community data that may not be fully updated after each game patch.
Advantages
The anomaly detection system is what makes Keep the Door Locked tense and replayable. Every visitor gives you a puzzle: verify or trust, open or refuse. Because anomalies follow predictable tell patterns, learning the database gives you real power — a player who knows the tells can breeze through nights that would kill a new player four times over. The detection methods are also satisfying to master: night vision, camera cycling and close listening are skills that improve dramatically with practice, which keeps the gameplay fresh and makes each successful call feel earned. The module information gathered from player reports constantly expands this list, and the community actively shares new sightings, so there is always something new to learn even for veteran players.
Challenges
The biggest weakness of anomaly hunting is uncertainty. The game is updated often, and the exact anomaly roster changes with patches — a creature that behaves one way in August may behave differently next month. Some tells are also purely community-reported, so there is always a chance a guide describes behavior that no longer matches the current version. Finally, over-reliance on detection can backfire: some anomalies deliberately mimic safe patterns, and a player who memorizes a checklist without actually watching the cameras will eventually make the wrong call. Some tells are also purely community-reported, so there is always a chance a guide describes behavior that no longer matches the current version of the game.
Frequently Asked Questions
How do I tell if a visitor is an anomaly?+
What are the most common anomaly tells?+
How often are new anomalies added?+
Quick Tips
Always check the monitor before the door. Anomalies are often camera-only: they look normal in person but reveal their true form on CCTV or night vision. The single habit of "knock → monitor → decide" catches most anomaly visitors before they ever get inside. Since the monitor does the heavy lifting, spend your in-person time on the room itself and use camera time for verification only.
Listen for the voice flip. Several anomalies alternate between normal speech and a deep, gravelly demonic tone. Put on headphones and let the audio be part of your inspection — your ears can catch tells the camera misses. Put the volume at a level where you can still hear the room around you, and treat any sudden pitch change as a refuse signal rather than a curiosity.
Treat missing evidence as a hard refuse. If the visitor claims someone is with them or an emergency is happening, but the camera shows nothing, that is one of the strongest anomaly signals in the game. Refuse immediately, no second guesses. The strongest anomaly signals are the ones that combine: a story mismatch plus a voice oddity is nearly always a fake visitor.
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