These things are crawling around me. If they 
had eyes, | assume they'd be looking at me. 
They want to know what they can do for me. 
Two weeks ago they were all my friends; now 
they're piles of mush. 


The daughter and her followers came. They 
killed everyone and let the contaminated out of 
their cells. She left me alive though, because 
I'm "worthy." Whoopdie-fuckin-doo. They killed 
Kellogg too. Shame, | could do with killing 
someone right now, guess it'll have to be you, 
Akul'hil. So you gave me all these "gifts", being 
able to understand your language, being able 
to command these things, because I'm 
worthy? Neat. The only thing I'm going to use 
them for is killing you. 


Remy is...lying down, | guess, next to my leg. | 
wonder if he recognizes me. He's a parathreat 
now, and I am fully capable of terminating him. 
| could simply order all of these things to jump 
in a fire. What am | talking about? I'm a 
parathreat now. I'm not naive enough to think 
that destroying Akul'hil will revert this, but my 
life doesn't have any other purpose now. | 
don't have the option of having another 
purpose now. 


Footnotes 

1. Amnestic treatment is ineffective against complete instances of 
SCP-1537-A and entirely ineffective against SCP-1537-B at all 
stages of exposure. 

2. Term used by the GOC to describe anomalies. 


« SCP-1536 | SCP-1537 | SCP-1538 » 


SCP-1538: Instructions to a Twin-Screw Extruder 


Item #: SCP-1538 
Object Class: Euclid 


Special Containment Procedures: Instances of SCP-1538 are 
cataloged and filed in the Site-23 Archives, and may be accessed 
with clearance from the Research Director. A compendium of 
transcribed SCP-1538 text is available through the Site-23 ADONIS 
secure sub-network. 


All reports concerning suicides filed by law enforcement agencies in 
the Daejeon metropolitan area are to be clandestinely monitored by 
regional Foundation assets for evidence of SCP-1538 instances. In 

the event of a resumption of SCP-1538 manifestations, subsequent 
investigations are to be turned over to Foundation operatives using 

the established cover of National Police Agency Task Force Wae, a 
special unit within the South Korean law enforcement structure. 


As of / /2010 and the conclusion of Exploration 1538-1, access to 
the Sogsagim cave system in Hallasan National Park is closed to all 
personnel and civilians. A security perimeter is to be maintained 
under the auspices of a long-term ecological restoration project. Any 
unusual activity near the Exploration 1538-1 initial entry point is to 
be immediately considered a medium-risk containment breach 
event, subject to established response protocols. 


Description: SCP-1538 is a collection of fifteen documents that 
appeared between 07/29/2008 and 02/11/2010, transcribed as 
suicide notes by fifteen separate individuals. Despite confirmation by 
Foundation investigators of no existing relationships between any of 
the fifteen individuals, each suicide note left behind by these 
individuals contains a portion of a unified narrative. In all cases, 
SCP-1538 instances consist of specialized technical instructions 
interspersed with personal sentiments consistent with a suicide note. 


All individuals responsible for instances of SCP-1538 resided within 
80 km of the city of Daejeon, South Korea, most having maintained 
residence in the district of Jung-gu. Two individuals resided in the 
Yuseong-gu district, while one was a long-term patient in the city's 
Taejon Shinsaeng mental health facility. No anomalous factors 
appear to have contributed to suicides: Review of law enforcement 
and personal records indicate that in each case, financial distress, 
troubled interpersonal relationships, untreated mental illness, or 
other commonly cited motivations for self-harm were responsible for 
each individual's decision to take their own life. The fifteen authors 
of SCP-1538 demonstrate no clear demographic similarities, and 
vary in gender, age, profession, socioeconomic status, family 
background, and all other observable traits. 


When combined, the entirety of SCP-1538 instances (with the 
exception of Note 4) form a technical manual for the operation of a 
twin-screw extruder machine of unknown manufacture (hereafter 
SCP-1538-1). Note 4 contains GPS coordinates indicating a 
previously undiscovered access point to the Sogsagim cave system, 
within which SCP-1538-1 was discovered during Exploration 1538-1. 


Addendum 1538-1: Sample SCP-1538 instances 


Note 3 was left by , a 43-year-old female teacher 
at a technical high school. Ms. __'s body was found in 
her car in the school parking lot by students arriving for 
morning classes. Cause of death was later ruled to be 
self-induced asphyxiation. 


The "actual" column displays the actual data from your 
process. The "set" column displays the set points of your 
temperature controllers and analog signals. By default 
the alarm values (Hi, HiHi, Lo, LoLo) for each zone 
temperature are set to +15 HiHi , +10Hi, - 10Lo , -15 
LoLo. All alarm values 


lam so sorry. | am not strong enough for this. Please do 
not call any more attention to me than 


All parameters are color coded based on alarm status. 
You will notice that when you place the mouse pointer in 


any parameter cell the parameter will appear on a small 
text balloon. There are 3 major ways to view a process 
parameter's data. These are: 


Do not tell Kim they found me like this. The shame is 
great enough already. Goodbye. 


This allows you to see the alarm values along with the 
actual parameter value, and in the case of a temperature 
control zone, the temperature setpoint. Once the data 
strip is in view you can left click on any parameter and it 
will be displayed in the data strip. 


Note 14 was found folded in the shirt pocket of : 
a 22-year-old male university student. Mr. ‘S remains 
were recovered at the bottom of a cliff after being 
discovered by hikers in a coastal region in western 
Chungnam province, and were found to be partially 
scavenged by local wildlife. 


My actions have led me here. No one else's. | have 
caused immeasurable grief to those around me, and 
brought disgrace to those who trusted me most. | am 


As discussed earlier in this manual, log event comments 
by using the "Add Event" button on the icon bar. You can 
also log event comments by double clicking the left 
mouse button on the graphic window this will open the 
"User Event Log" window. You can then add your event 
comments and then click OK to add them to the Events 
page. Note: events are logged at the current run time, 
not the point of 


| hereby leave all my belongings to my mother, father, 
and sister. In addition to what's in my room, | have a 
small safe deposit box at the Woori Bank on Munwha-ro. 
The combination 


While melting and “pumping” as much polymer to the die 
as possible is important, mixing material in compounding 
applications is equally important; there are many ways of 


achieving good mixing. Pins may be placed in strategic 
places in the metering section of a screw. Fluted 
sections at the end of the screw help to both mix and 
melt left over solid polymer 


Note 8 was recovered on a bedside table in the hotel 
room where _ , a 19-year-old musician, was found dead 
from a self-inflicted gunshot wound to the head. An 
autopsy later indicated that Ms. had ingested lethal 
quantities of demerol and eighteen capsules of Zotepine, 
an anti-psychotic drug that had recently been prescribed 
to her. 


1. High amps, material too fused at vent - generally 
results in a “hot” extrusion with glossy and wavy I.D. 
caused by high melt viscosity, or early fusion in barrel (in 
twin screw). (a) Formulation may need a higher external/ 
internal lubricant ratio. Decrease calcium stearate 0.2phr 
and/or increase wax 0.1-0.2phr. (6) Screw temperature 
may be too high.Screw temperature should be about the 
same as the metering zone of 


Why do they keep peeling my skin, it hurts make it stop. 
It hasn't stopped for hours. Help isn't coming, no matter 
what he says help isn't coming. 


Good ideas are bad ideas | have a very good idea, they 
can't collect on what isn't here. Empty threats when 
nothing can be worse than this | dare them. 


So nice of you to come | can sing they like to sing we'll 
all never stop singing not even when we can't blink 
anymore and the lights flash and flash and flash. | know 
a song and | like parties all kinds all places. | know two 
songs the ones they write for me and the ones the other 
things write for me. | don't like songs. 


7. Powdered, or semi-fused material extruding out of 
vent, with flood feeding. (a) Generally a barrel 
temperature profile out of balance. Rear zone (1&2) 
temperatures usually need an increase for twin screws, 


but a decrease for single screws. 
+ Addendum 1538-2 LEVEL 3 CLEARANCE REQUIRED 


Addendum 1538-2 - Summary of Expedition 1538-1: 
Following a six-month period after the recovery of Note 
15, researchers determined that no further notes were 
likely to be forthcoming. Initial investigation of the GPS 
coordinates contained in Note 4 revealed the presence 
of a small, unmapped entrance to the Sogsagim cave 
system. On / /2010, Foundation personnel organized 
an exploratory party to investigate any accessible 
portions of the cave system and document any findings. 


An eight-person group consisting of three researchers, 
three security personnel and two D-Class test subjects 
were dispatched to Hallasan National Park. D-Class 
subjects were equipped with ropes, helmets, flashlights, 
and associated spelunking gear, as well as a helmet- 
mounted video camera, a cable relay for audio 
communication and two days’ worth of emergency 
provisions. Researchers established a small observation 
outpost at the cave entrance while security personnel 
established a perimeter and failsafe devices at the entry 
point. At0615 hours on / /2010, D-Class subjects 
commenced exploration. 


Initial observations were consistent with a primary cave 
or lava tube structure, similar to previously documented 
portions of the Sogsagim complex. The initial 200 m of 
the passage consisted of a tubular, approximately 3 m 
diameter passageway proceeding in a westerly direction 
until narrowing considerably and sloping sharply 
downward. The passageway was lined with an 
unidentifiable dark red slurry, and featured a 
considerable amount of arthropod activity as unidentified 
species of beetles, centipedes, and spiders were 
observed in substantial quantities at its entrance. 
D-88127 (equipped with a video camera) crawled first 
into the passage, followed by D-49213. 


Subjects crawled through this portion of the cave for 
three hours, at times having to assume a completely 
prone position due to extremely narrow stretches. After 
descending an estimated 85 m during this time, the 
passageway opened into a spacious chamber featuring 
numerous speleothems (mostly pillars and dripstone), 
typical of nearby cave formations. Subjects observed, 
however, that the floor of the chamber consisted of 
polished black marble tile, in the manner of a constructed 
dwelling. No other signs of human habitation or artifice 
were present. Subjects continued traveling for 
approximately 30 m in a southeasterly direction until 
encountering a .75 m diameter hole in the chamber floor. 
After searching for alternate routes outside of the 
chamber and finding none, subjects established an 
anchor point at a nearby pillar, attached a rope and 
descended into the hole. 


Subjects rappelled into a shaft with an estimated depth 
of 25 m, terminating in a small chamber. Upon reaching 
the floor of the chamber, subjects documented their 
surroundings, noting that the walls and floor were coated 
with the same slurry as the initial passageway. In the 
center of the chamber, subjects discovered what 
appeared to be a twin-screw extruder machine with an 
integrated computer terminal, such as that seemingly 
described in the SCP-1538 narrative (described in later 
reports as SCP-1538-1). SCP-1538-1 was wired to a 
series of automotive batteries, which served as an 
apparent improvised power source. No other artificial 
structures appeared to be present in the chamber. 


Upon instructions from researchers, D-49213 
approached the computer terminal and activated 
SCP-1538-1. D-88127 recorded video data of the 
encounter. The following is a transcript of the 
subsequent sequence of events: 


D-49213 powers on SCP-1538-1. A startup 
sequence displays on the integrated monitor, 


consistent with activity described in the 
SCP-1538 narrative. A prompt reading "input 
commana" appears on the screen. 


D-49213: Initiation confirmed. What do you 
want me to do next? 


Researcher Eng: (via D-49213's telecom link) 
Please input "initiate operation 15 mode 3" into 
the terminal. 


D-49213: Copy. 


D-49213 enters the command as instructed. 
After twenty seconds, a response appears on 
the screen, reading "unrecognized operator 
present", followed by a second message 
reading "requested data not found". 


D-49213: What now? 


Researcher Eng: (unintelligible dialogue from 
multiple staff in background) Um, stand by... 
(additional background dialogue from multiple 
staff) wait and see if it returns to the "input 
command" prompt. 


D-49213: It's making some sort of grinding 
noise now. 


SCP-1538-1 commences mechanical 
operation. A message on the monitor appears 
reading "initiating Sequence 4". 


D-49213: It's doing something now, things are 
moving. There's something coming out of it. 


Researcher Eng: D-88127, | want video of the 
output port. 


D-88127 moves the camera towards the end 
of SCP-1538-1. As the camera focuses 


closely, SCP-1538-1 is shown producing a 
steady stream of a substance resembling the 
dark red slurry documented previously in the 
cavern at a rapid rate. The substance appears 
to be intermixed with teeth, bone fragments, 
and scraps of epidermal tissue. 


D-88127: What is that? 


Researcher Eng: Please continue the video 
feed. 


SCP-1538-1 continues to produce a steady 
supply of slurry despite lack of visible input. As 
the mound of slurry approaches a height of 
2m, movement becomes apparent within it. 


D-49213: There's something moving around in 
there, command. 


Researcher Eng: Maintain video contact. 


Movement continues within the SCP-1538-1 
slurry pile. After 45 seconds of additional 
observation, a pseudopod-like structure 
emerges from the center of the slurry pile. At 
the end of the structure is what appears to be 
a skinned human face’. 


D-88127: Shit! Shit! 


Researcher Eng: Keep the camera on it, 
88127. 


The pseudopod extends directly upwards to a 
height of approximately 4 m before beginning 
to move towards D-88127. 


D-49213: Get the fuck out of here! 


Video contact is lost as the camera is dropped 
to the ground and subjects flee. The sounds of 


a rope ascender being attached are audible, 
as well as unintelligible screaming from 
D-88127 and the sounds of fabric ripping and 
an unidentified liquid spilling onto the floor. 


Neither subject responded to repeated orders and 
attempts at communication over the telecom link after 
loss of the video feed, although what is presumed to be 
D-49213's labored breathing and the sound of a rope 
ascender were heard constantly for the next ten minutes. 


At 1327 hours, D-49213 confirmed that he reached the 
marble tile chamber above SCP-1538-1. Faint, 
unintelligible screaming was heard in the background of 
D-49213's communications. Researchers repeatedly 
asked D-49213 for an explanation of events after loss of 
the video feed; no answers were forthcoming.