Acquisition: SCP-2358 was first discovered during an experimental 
project by the Foundation Department of Antimemetics designed to 
utilize chemical mnestics in an attempt to locate and secure 
anomalies which otherwise resisted perception. The first SCP-2358 
instance was located in New York during an experimental sweep of 
the area. 


Addendum: Two notes have been discovered attached to each 
SCP-2358 instance. Content is identical between instances, and all 
notes seem to be affected by the same antimemetic phenomena as 
SCP-2358. The notes have been replicated here. All redaction 
present also existed in the original documents. 


Item #: SCP- 
Object Class: Keter 


Special Containment Procedures: [PREVIOUS PROCEDURES 
IRRELEVANT] Each SCP- _ instance is to be contained through the 
use of a Mariotte-Pashler antimemetic perception filter. Each SCP- 

instance is to be placed at a location which experiences large 
amounts of traffic and/or has a high population density. 


Description: SCP- is aset of seven memetic vector objects. 
SCP- instances are similar in appearance to blue, translucent 
trees. SCP-__ instances are incapable of physical interaction with 
matter, rendering them effectively intangible. 


When not visually observed by a human being, SCP- will begin to 
grow and expand rapidly. Due to its intangibility, SCP- _is able to 


grow through most barriers. SCP- _ will usually grow in such a way 
as to maximize its observation by humans. Visual observation by 
humans has been shown to halt and reverse SCP- growth. 


Once a human being perceives SCP- _, they will be subject to a 
series of mental effects. These effects take place in four stages. The 
time required for all four stages to occur can range from 13 to 120 
hours. 


Initial Exposure 


Stage 1: Subject displays an increase in interestin SCP- , and 
may find it difficult to concentrate on subjects and tasks not related 
to SCP- 


Stage 2: Subject claims to experience hallucinations of SCP-__-like 
plant growth on nearby surfaces. Durring this time, subjects will 
attempt to increase awareness of or expose other humans to SCP- 


Stage 3: Subjects lose visual perception, claiming that the 
hallucinated growth is continually obstructing their view. Subjects 
may experience seizures during this stage. 


Stage 4: Subject enters a catatonic state, and demonstrates 
heightened levels of neurological activity. 


Amnestic treatment has proven effective in slowing symptoms, but 
have yet to halt or reverse them. 


Movement of SCP- by humans can be achieved through [DATA 
EXPUNGED] which serves to transfer the information over a 
distance through the use of a human medium. 


Acquisition: SCP- __ first manifested in the Site-13 Memetics 
Department, Wing 9, on //19 . Source unknown. 


Hello to whoever is reading this, 


OOXHeOkICtOOOO#eUkOhOOkBeOkIOOUeNO Xe 
OIKIOOpUOXHe®kalliel® 
OOObakilO ki eOkIOIOUOOkE eo kid#® OKOONIODOHe®OkinOO 


OOOH Oklalile® 
DOOnkikiOOk® OROOUOkH®OXIOOOO i ® OOOO HeOkOOOdoo 
Xi ®OXOUUU8 otlUOU kiki k#h eokOOeNOO kl 
@UkpHOOOOkH#eokalLOLokl#eOkIOOOOOEweklOOOen® 


OOOO kHeOIOkHeOXIObOIOOO ke ®@OROOOOO 
XH IO@OXOOUOLORHOeOUKOOH0® noOkikig IO 
t®@OUUOOkHeoNkINOOOO 
XiHue®OKIOOUOsoki#eOkOOOOO 


Since the cognitohazard didn't activate and you are still able to read 
this, you either work for the Foundation or someone who is just as 
well equipped to carry out containment. If you're reading the original 
version of this document, relay what it says to your superiors as 
soon as possible and get some Class-A amnestics in your system. 
The fact that you've seen the tree in person means that you're going 
to die soon anyway, but the amnestics should be able to buy you a 
few extra hours. 


Since you should be advanced enough to handle it, we can give you 
what information we have. The trees are, as close as we can figure 
out, a living version of information. The information is drawn in 
through the eyes, where it is then transferred to the brain. Let it 
reach the brain, and it has a new place to grow. Cut it off too soon 
and don't let it reach the eyes, the tree starts to get bigger. This is 
where the Mariotte-Pashler filter comes in. 


The filter attaches itself to a certain idea, in this case the trees. That 
information can still be absorbed by the senses, but the filter forces 
it to be automatically discarded as unneeded data before it has a 
chance to take root in the brain. Unfortunately, the filter can only 
handle so much information, that's why it's important that the trees 
stay in crowded areas, so they stay small. How it all works is much 
more complicated, but that's the overview. 


Feel free to have whatever expert on memetics or antimemetics you 
like look this over, they should be able to confirm that the 
information presented correlates with the anomaly, and that the 
containment procedures are appropriate. 


This is our containment procedure, this is what we had to do. Odds 
are that trust doesn't have a big role in your line of work, but we 
need to ask you to trust us this once, for your safety and ours. Don't 
move the trees, we know what we're doing. 


Godspeed, 
Melinda Williams 
SCP Foundation Counterconceptual Division 


No records of Melinda Williams or a Counterconceptual Division of 
the Foundation are known to exist. No SCP object with a four 
number identifier which matched the description provided in the 
document existed in the Foundation database prior to the creation of 
document SCP-2358. 


Due to authenticity confirmation codes embedded in the documents 
and by majority vote of the O5 Council, SCP-2358's containment 
procedures are to take the documents into account until further 
information comes to light. 


« SCP-2357 | SCP-2358 | SCP-2359 » 


SCP-2359: Yesterday, Upon the Stair 


Item #: SCP-2359 
Object Class: Euclid Keter 


Special Containment Procedures: SCP-2359 should be held 
within a standard humanoid containment cell lined with 
soundproofing materials. The cell must not contain media with which 
SCP-2359 could record information. SCP-2359 must be observed 
neither directly nor by live camera feed. Observation must be 
performed by binary positive-negative detection of motion within 
SCP-2359’s containment cell. 


All direct documentation of SCP-2359 — articles such as video 
recordings, audio recordings and transcripts, and photographic 
images — are to be classified as SCP-2359-A and stored ina 
reinforced secure locker. Access to these materials is restricted at 
all clearance levels, with exceptions subject to approval by O5-14. 


In-person interaction with SCP-2359 and examination of previous 
interactions are forbidden at all security levels. 


All research into SCP-2359’s anomalous properties is suspended 
indefinitely. Security staff assigned to monitor SCP-2359 must 
undergo fortnightly psychiatric evaluation. Any indicators of 
cognitohazardous infection will result in treatment with Class-C 
amnestics and rotation to other duties. 


SCP-2359 must not be relocated for any reason. 
+ Show Original Containment Procedures 


SCP-2359 should be held within a standard 
humanoid containment cell lined with 
soundproofing materials. The cell must not 
contain media with which SCP-2359 could be 


three hours after consuming drink; each flatus repeating the phrase 
“Yoo-hoo!” 


Money entered: 250 yen 

SCP-261 Powered or Unpowered: Powered 

Item description: Darling Clementine - A single piece of citrus fruit 
in a plastic wrapper. Nutrition label listed the only ingredient as 
“tangerine”. After consumption, D-3489 insisted the fruit was actually 
a satsuma. 


Money entered: 500 yen 

SCP-261 Powered or Unpowered: Powered 

Item description: <Unknown> - A wax-paper bag with a picture of 
an anthropomorphic cartoon pig wearing a toga and laurels on it. 
Contained three strips of bacon. D-3489 described bacon as “Ough- 
tay and-ay oo-tay alty-say.” D-3489 continued speaking in this 
manner for 45 minutes after consumption without noticing. 


Money entered: 500 yen 

SCP-261 Powered or Unpowered: Powered 

Item description: Russian Nesting Twinkie - Package contained a 
single Hostess brand Twinkie. Illustration on the package depicted a 
hand squeezing a Twinkie. D-3489 ordered to squeeze the Twinkie. 
Upon squeezing, the Twinkie ejected an identical Twinkie. The 
second Twinkie ejected a third in the same manner. A total of five 
Twinkies were produced before they stopped multiplying. 


Money entered: 500 yen 

SCP-261 Powered or Unpowered: Powered 

Item description: Rock Candy Geode - A plastic wrapped sphere of 
rock candy roughly the size of a softball. Other than the product 
name, the wrapper had no writing on it, only a picture of a hand 
smashing the ball against a tabletop. D-3489 was ordered to smash 
ball as indicated, which caused the ball to crack into two near- 
perfect halves. The ball was partially hollow and contained 4 
different colored layers of rock candy. 


Money entered: 500 yen 

SCP-261 Powered or Unpowered: Powered 

Item description: <Unknown> - A small cardboard box containing 
60 matches of various colors. The box was blank, other than a tiny 


able to record information. SCP-2359 must be 
observed neither directly or by live camera 
feed. SCP 2359 must only be observed via an 
animation of motion within its containment cell, 
as captured by a set of motion-mapping 
cameras. Observation of live camera feed is 
prohibited at all security levels. 


All direct documentation of SCP-2359 — 
articles such as video recordings, audio 
recordings and transcripts, and photographic 
images — are to be classified as SCP-2359-A 
and stored in a reinforced secure locker. 
Access to these materials is restricted at all 
clearance levels, exceptions subject to 
approval by Senior Researcher Gillard. 


SCP-2359’s responses during interviews must 
not be recorded. Interviewers and subjects will 
be recorded by laryngophones! and 
automatically transcribed by dictation software. 
Any understanding of SCP-2359’s 
contributions to the interaction must be 
extrapolated from these transcripts and no 
other sources. 


As a preventative measure, researchers, 
security officers and other staff assigned to 
monitor SCP-2359 must undergo fortnightly 
psychiatric evaluation. Any indicators of 
cognitohazardous infection will result in 
treatment with Class-C amnestics and rotation 
to other duties. 


Relocation of SCP-2359 should be avoided if 
at all possible, due to the high risk of 
cognitohazardous infection and containment 
breach during transit. If relocation is 
unavoidable, SCP-2359 must be confined to a 
mobile sensory-depriving transit casket before 
exiting its containment chamber, and must not 


exit the casket for any reason until it has 
arrived in its new containment chamber. The 
process is to be handled by a full response 
team equipped with sound-proof ear protection 
and motion-mapping closed helmets. 


See Addendum 2539-C for relevant documentation on SCP-2359’s 
revised classification and containment procedures. 


Description: SCP-2359 is a humanoid of 1.76 meters in height and 
66.2 kilograms in weight. All further physical description of 
SCP-2359 is impossible, as there is no way to observe the entity in 
a manner that would resolve its identifying characteristics without 
being exposed to its cognitohazard, and hence having the viewer's 
perceptions of SCP-2359 altered. While humanoid in shape and 
proportion, SCP-2359 does not need to eat, drink, or sleep, and only 
does so when researchers or test subjects enter its containment. 


SCP-2359’s primary anomalous property is a cognitohazard that 
propagates to anyone that makes visual, auditory or informational 
contact with it.2 The infection impresses a false identity and 
memories of SCP-2359 onto the mind of the affected subject. As a 
result, the subject believes SCP-2359 to be a person with whom 
they have been acquainted with for most of their lives, such as a 
close family member or childhood friend. The implanted identity is 
generally a person whom the subject trusts innately and — in a large 
majority of documented occurrences — would go to great lengths to 
assist. Interviews with multiple infected subjects have indicated that 
the infection does not make the victim believe SCP-2359 is a person 
already known to them, but inserts an entirely new person and set of 
experiences into the victim’s memories. Complete removal of the 
infection necessitates precision application of Class-C amnestics. 


SCP-2359’s cognitohazard propagates through all current forms of 
media with the capacity to distinguish identifying characteristics. 
Class-D test subjects have displayed recognition of SCP-2359 when 
exposed to Polaroid photographs or digital images; film or digital 
videos; analogue or digital audio recordings; and software-dictated 
transcriptions of audio recordings. 


It is impossible to communicate with SCP-2359 through any medium 


without becoming indoctrinated by its cognitohazard. Likewise, it is 
impossible to visually observe SCP-2359 or any visual captures of it 
— including more abstract renders such as software-interpreted radar 
imaging — without becoming infected. The only current method of 
observation that has not been evidenced to result in 
cognitohazardous infection is a system of motion-mapping cameras 
that construct a representative animation of motion within 
SCP-2359’s containment cell. The entity’s cognitohazard also 
cannot propagate through second-hand documentation, description 
or repetition of what subjects believe SCP-2359 has said. 


When contradicted, SCP-2359’s cognitohazard functions as a latent 
kill agent. When presented with conflicting evidence, the resulting 
dissonance experienced by a victim or subject cascades into a 
infohazardous kill agent.3 See Addendum 2359-A for relevant 
details. 


Addendum 2359-A: Transcript of Senior Researcher Gillard’s 
Debriefing Interview with Agent Shaw 


+ Show Interview Log 2359-B-A 


Interviewed: Field Agent Shaw 
Interviewer: Senior Researcher Dr Gillard 


<Begin Log> 
Dr Gillard: Good morning. 
Agent Shaw: Good morning. 


Dr Gillard: For the record, please state your 
name and position. 


Agent Shaw: Shaw, Nashville office Field 
Agent. 


Dr Gillard: And you understand that this 
debriefing pertains to the recent containment 
of SCP-23... uh... 2359, yes? 


Agent Shaw: Yes, ma’am, | do. 


Dr Gillard: Alright. Just so you know, we have 
all the documentation we need on the 
procurement of 2359. This is a testimonial for 
our research into its anomalous properties. 


Agent Shaw: | understand. 


Dr Gillard: Then that'll do for the pleasantries. 
Now... can you tell me about your involvement 
in the operation? 


Agent Shaw: I... | don’t really remember all of 
it. 


Dr Gillard: That’s fine, just tell me what you 
can recall. From the beginning, if you don’t 
mind. 


Agent Shaw: Okay, well... | was dispatched 
from Nashville to Buxton County — uh, that’s 
Nashville, Tennessee, by the way. 


Dr Gillard: Yes, . Please continue. 


Agent Shaw: So | was dispatched to Buxton 
County with Hereford and Dietrich. There’d 
been a lotta stroke victims in the county 
morgue last month, and our supervisor wanted 
us to sweep for anomalies. Honestly, | 
expected that we'd just tell the locals to cut 
back on the salt and that'd be it. 


Dr Gillard: But it wasn’t. 


Agent Shaw: ‘Course not. We poked around 
Buxton proper for a few days; interviewed the 
next of kin and so on, but there were no leads 
on any sort of anomaly. Not until we started 
talking to the rural residents. One guy... uh... 
Henry Sturman, | think it was, said that his 
brother had come home from town talking