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| A typical location in which SCP-CN-2781 can occur. Located in a dormitory in Site-CN-75-B; currently renovated. |
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Item #: SCP-CN-2781
Object Class: Keter
Special Containment Procedures: As SCP-CN-2781 can occur anywhere in the world, there is no way of directly containing it. The Foundation is currently marking all buildings that can incur SCP-CN-2781. If the building is already in use, a Type-B memetic module is to be installed nearby to drive away unrelated people and renovations are to be conducted in the name of "engineering renewal"; if the building is still under construction, personnel are to be dispatched to modify the blueprints and construction accordingly.
Foundation webcrawlers are deployed to detect information related to SCP-CN-2781 on the internet and perform relevant countermeasures.
Description: SCP-CN-2781 is a phenomenon that can affect the human body, which occurs when the following criteria are fulfilled:
- The time is between 8 pm and 4 am;
- The subject is in a room at the end of a corridor in a home or office, with a door on the left, on the right, and in front of the subject;
- The corridor's lights are off, and the three doors are closed or ajar.
In addition, the chance of SCP-CN-2781 occurring is highest if one of the three doors leads to a toilet, and the subject exits the toilet through that door.
After SCP-CN-2781 occurs, the subject will become an instance of SCP-CN-2781-1. A tightly-packed arrangement of doors will manifest on both sides of the corridor, and the far end of the corridor will be obscured by darkness; in all recordings, there is no way to reach the end of the corridor. If the subject attempts to call for help, SCP-CN-2781's anomalous effects will respond in a certain manner. The following are some recorded actions that trigger SCP-CN-2781's response:
| -1 instance action | SCP-CN-2781 response |
|---|---|
| Loudly calling for a person | A voice can faintly be heard from the far end of the corridor; the voice's tone is identical to that of the person being called |
| Checking their wristwatch | Time rewinds after each second, accelerating to the point where time reverses one minute after each second |
| Turning on a flashlight | Doors illuminated by the flashlight become white walls, turning back into doors after the flashlight is removed |
| Running down the corridor | The sound of footsteps will slowly approach the subject from behind |
| Taking out a mobile phone | The phone will vibrate and ring at maximum volume; the screen will be pure white at maximum brightness and the phone will not respond to input |
| Taking out toilet paper or paper towels | The paper will be soaked with water and possibly have a strange smell |
| Taking out a pen | When taken out, the pen will point upward, and mark the hand with a green fluorescence that cannot be erased |
| Attempt to open a newly manifested door | Subject's hand will be stuck to the door, after which [REDACTED] |
If the subject returns to one of the original three doors after SCP-CN-2781 occurs, they will be returned to baseline reality and all anomalies caused by SCP-CN-2781 will revert. However, all subjects reported night terrors and insomnia the night after encountering SCP-CN-2781.
Addendum: In some cases, people attempting to open a locked space that has been obstructed for a long time near an ongoing SCP-CN-2781 event may encounter anomalous obstruction when opening the door. It is not known how this phenomenon relates to SCP-CN-2781.