The subject will begin showing symptoms of mercury poisoning, and 
large parts of skin will flake off exclusively around the facial area two 
days after exposure to the trigger information. After five days, 
typically when the pigmentation of the affected area is a pure white 
in color, the dermis will begin to form a protective layer of similar 
composition to SCP-1903's mask, with the exclusion of any traces of 
mercury. 


This layer will continue to form until it covers the entire facial area, 
and will eventually appear to resemble a paper maché animal mask 
of a similar fashion to SCP-1903's, which typically resembles 
rabbits, cats, wolves, foxes, and rats. Over the course of this 
change, the hands and feet will undergo a pigmentation shift, 


darkening considerably. Their nails will sharpen, growing into claws 
over time, and the subject's hearing will transfer to the nearest set of 
novelty ears which represent the animal that their masks resemble. 


Once subjects have found these ears, they will show reluctance to 
taking them off, but this is most likely for circumstantial reasons. If a 
pair of ears becomes damaged to the point where repair without 
spare parts is impossible, the subject will become permanently deaf. 


Subjects have reported specific hallucinations once their mask has 
fully developed (see Interview-1903-2 for more information), and a 
reluctance to discuss SCP-1903 with those who have not already 
been affected, but no other changes in behavior have been noticed. 
When an affected subject tells a non-affected subject about the 
trigger information, the normal subject will undergo the changes the 
affected subject went through up until that point, but the affected 
subject's blood cell formation will begin to accelerate. 


Two to three days later, blood will begin to seep through the pores in 
the subject's hands, feet, and gums. Within a few hours, mercury will 
begin to appear in the subject's bloodstream. This does not 
physically affect the subject, or other subjects in a similar state. 
However, it does severely affect the subject's mental health, and the 
physical and mental health of others who are not affected similarly. 


Event-1903-3: On 02/27/194 , SCP-1903 was discovered to harbor 
a slow-acting infohazard. The effects of this infohazard spread 
throughout the research team, two security guards, and two 
informants. Research Assistant Jennings, the author of Revision-1 
and Revision-2, experienced advanced symptoms of the infohazard, 
and later committed suicide via mask removal after three days of 
isolation. 


Dr. Hayward reported that SCP-1903 approached its cell's 
observatory window, and attempted to communicate with Dr. 
Hayward after reading an uncensored Revision-2. See Interview 
1903-2 for more information. SCP-1903 has been reclassified to 
Euclid. 


Interview 1903-1: 


Interviewed: Mr. A = Donnar 
Interviewer: Agent Crowely 


Foreword: Mr. A Donnar was met in his office for 
questioning. Agent Crowely was under the guise of a 
private investigator. Donnar was given a cover story 
stating that SCP-1903 died of blood loss. 


<Begin Log, 02/24/194 ; 24:50> 


Crowely: Mr. Donnar? Private investigator. | have a few 
questions; may | have a word? 


Donnar: God damn it, | thought you all were done. Fine, 
fine, but make it quick: This is bad for business. 


Crowely: Thanks. How well did you know Jackie? 


Donnar: Not well. She was one of the skirts; that's it. | 
haven't heard a single complaint about her till all of this 
shit started. 


Crowely: [pause] Do you know anything about her? 


Donnar: Uh, no, not really. | made sure she didn't steal 
anything and that she didn't sneak out while on the job. 
Mainly though, | made sure she kept her mouth shut. Uh, 
what's-her-name clearly didn't get the message. 


Crowely: Jackie. 

Donnar: Oh, yeah. 

Crowely: What exactly do your employees do? 
Donnar: | don't know. 


Crowely: Do you really expect me to believe that, 
Donnar? You own the fucking business. 


Donnar: Let me re-clarify: | don't want to know. Our 


clients are typically important people, which means 
they're usually over-worked. When they're all work and 
no play, they can get rather... depraved for a good time. 
They can't really keep a low profile when it comes to who 
they are, so | give them the means to conceal their 
identity, hence the theme. [exhales] It might help you if 
you go bug A F about this. He hasn't been around 
since, and there was always something off about him. 


Crowely: [exhales] A Rinse 


Donnar: Yeah, him. He always looked like he was 
expecting something. He managed the chemical plant a 
few blocks from here. Had a wife, high income job, no 
real criminal record. He was a regular, but he always 
brought about three or four friends with him. Different 
people each time. Don't ask who they are, cause | don't 
know; | couldn't get any information about any of them. 
Maybe they used aliases for that one time, and never 
came back; maybe they've been living off record. Maybe 
both. Either way, | know shit about them. 


Crowely: Anything else? 


Donnar: 'Fraid not. They've spent more time here than 
usual | guess; maybe an hour each visit. And their 
requests were the same. The, and | quote, "woman 
dressed in white". Jackie was their preferred handler. 
Oh, and the prick's wife came around here, sticking her 
nose where it don't belong. 


Crowely: F's wife contacted you? 


Donnar: Yeah. The bitch came around here looking for 
information. She must've been suspicious, and followed 
him here. | sent her away, but she must have got to 
Jackie after hours. Was probably given some sob story 
about how her husband's cheating on her or something, 
and Jackie told her. All | Know is that Jackie didn't come 
in the next day. 


<End Log> 


Interview 1903-2: 


Interviewed: Dr. Hayward 
Interviewer: Dr. Crot 


Foreword: Prior to Event-1903-3, Dr. Hayward reported 
SCP-1903's abnormal behavior. Dr. Hayward gave 
orders to R.A. Jennings to write revisions 1 and 2. 
Jennings suffered advanced stages of affliction, and 
committed suicide three days later. 


<Begin Log, 03/07/194 ; 12:30> 
Dr. Crot: So. How are you feeling? 


Dr. Hayward: Fine | guess. | feel bad about Jennings. 
He wouldn't have written the report and sent it out to 
everyone if | hadn't told him to. No one on the team knew 
the whole story at the time, just fragments. 


Dr. Crot: You were just doing your job. If he hadn't 
written it, someone else would have. 


Dr. Hayward: [exhales] | guess you're right. Someone 
had to do it | suppose. If not him, then Martin, or Tammy. 
Listen, | appreciate the sympathy, really, | do, but I'm 
sure you have questions; let's just get them over with. 


Dr. Crot: [pauses, then exhales] How did you feel after 
exposure? 


Dr. Hayward: | felt fine at first. After a couple of hours, 
the affected areas started to feel irritated though. | didn't 
think much of it till the second day. By then, it felt more 
like a bad sun burn, and my face was peeling off. The 
testing for mercury wasn't much fun either. It still kind of 
hurts when you touch it. 


Dr. Crot: Alright, we can provide you some painkillers if 
it'd help. Would you mind detailing your report? You said 
that SCP-1903 attempted to communicate with you? 


Dr. Hayward: Right. | was in the observatory reading 
revision 2. By the time | finished, | saw SCP-1903 staring 
at me from across the cell through the observatory 
window. | didn't even notice her move, made me jump. 
She didn't say anything, but she shushed me. | pressed 
the button for a photograph, and tried to talk to her 
through the intercom, but when | did, she just sat back 
down on her cot. My guess is that she realized | was 
reading her file and then tried to warn me not to tell 
anyone, but that's all that is: a guess. 


Dr. Crot: Thank you. Anything else you want to report? 


Dr. Hayward: No, I- actually, yes. | don't know if any of 
the others have been seeing this, but occasionally, | get 
these flashes. 


Dr. Crot: Flashes? When did you start seeing them? 
How frequent? 


Dr. Hayward: Actually, that's probably not the right term. 
Short-term hallucinations? | started seeing them last 
night, around the time | noticed that the mask finished 
growing. | don't feel dizzy or anything when they happen; 
sometimes | don't even notice them happening because 
I'm focused on something, but sometimes, maybe like... 
once every couple of hours, people kind of... Change 
clothes. | can tell it's the same person, but they're either 
wearing a white tux or a white evening gown. Classy, if a 
bit revealing. 


Dr. Crot: [pause] How revealing? 


Dr. Hayward: Oh, uhm... [quickly murmurs] The dress 
has a lot of cleavage, and the entire back shows, but the 
skirt kind of reminds me of a wedding dress. 


Dr. Crot: You didn't- 


Dr. Hayward: No! Yes. | didn't... I'm sorry, | looked away 
when | noticed it. I'm not a pervert. And that's not what 
I'm getting at here. People've also been wearing the 
masks. 


Dr. Crot: Wait, you mean like yours? 


Dr. Hayward: No, more like the ones in storage. The 
ones we got from Donnar's. If there's enough people 
around, it kind of looks like a masquerade, except 
everyone just... turns their heads to face me; even if 
their necks should've snapped, they just kind of... stare 
at me. 


Dr. Crot: How long do these hallucinations last? 


Dr. Hayward: | don't know, maybe around... ten, twenty 
seconds? 


Dr. Crot: When this happens, is this all you see? 


Dr. Hayward: Well, sometimes, there's this man leaning 
against the wall. He looks at me too, but... | don't know, 
he just kind of glares at me, like he expects me to be 
doing something. He's not wearing a mask. Brown suit, 
so he kind of sticks out. | should be able to know what 
his face looks like, | Know that expression too well, but | 
always seem to forget it when | try to imagine it... I- | 
think it might be Donnar. 


<End Log> 


Closing Statement: Dr. Hayward's testimony has 
matched those of other SCP-1903 personnel, who have 
similarly hypothesized that Mr. A Donnar was a part of 
this shared hallucination. Further investigation into 
SCP-1903's behavior has shown that it is experiencing 
hallucinations as well. Research into whether SCP-1903 
is experiencing the same hallucinations, or at different 


intervals than SCP-1903 personnel is ongoing. 


Footnotes 

1. This week is considered vacation time, and is necessary to 
reduce claustrophobia, stress, and anxiety for all SCP-1903 
personnel. See protocol-1903-G for staff substitution procedures, 
and off-site behavior. 

2. There are currently 17 personnel with SCP-1903 clearance levels. 
3. The mercury isotope is believed to have been placed to cover up 
DNA tests, and possibly cause further long-lasting damage to the 
subject's mental health. 


« SCP-1902 | SCP-1903 | SCP-1904 » 


SCP-1904: Play Tubes 


Item #: SCP-1904 
Object Class: Euclid 


Special Containment Procedures: SCP-1904 is currently 
dismantled and housed in Storage Unit-07. No further procedures 
are necessary to contain SCP-1904. SCP-1904 is to be monitored at 
its original location, currently disguised as a government warehouse. 
All outer surfaces and surroundings are to be cleaned and 
disinfected on a weekly basis and immediately following 
reproductive activity. Nine (9) research samples of SCP-1904-1 are 
currently maintained in individual cells at site-17. Additional 
instances of SCP-1904-1 are to be collected and terminated unless 
requested by Dr. for further examination. Under no 
circumstances are personnel to enter the object [see incident report 
1904-A] 


Description: SCP-1904 is a network of recreational plastic tubing 
installed at a restaurant in , MD.1 Structure exhibits few 
unusual properties at rest other than an occasional trembling and 
vocalizations likened to "whimpering." On an irregular basis, 
vocalization may escalate into moans, shrieks and occasional 
"gagging" or "choking" sounds lasting up to several hours at a time, 
usually marking the start of a new gestation cycle. Gestation lasts 
anywhere from eight days to eleven months, during which trace 
amounts of blood, amniotic fluids and uterine tissues may leak with 
increasing frequency from the structure's lowest entryway. No 
particular origin point or DNA match for these fluids has been found. 
A typical gestation cycle culminates in a single violent expulsion of 
fluids, tissues and one or more instances of SCP-1904-1. 


SCP-1904-1 resemble human embryos at varying stages of 
development, with higher stages consistently exhibiting severe 
congenital deformities. Regardless of condition, survival rate is 
nearly 100% until termination. Instances increase steadily in size 


and mobility with minimal nutrient intake but do not progress further 
along embryonic development or otherwise appear to age, the 
oldest research sample now exceeding _ kg. Cognitive 
development is minimal, though instances equipped to do so have 
been observed imitating staff vocalizations and in some cases 
attempting reproductive behavior. SCP-1904 exhibits a spike in 
vocalization coinciding with the termination of any SCP-1904-1 
instances, described as "screaming" followed by prolonged periods 
of "weeping." 


Incident Report 1904-A 

During SCP-1904's initial examination, D-4356 was sent inside the 
structure with standard audio-video surveillance equipment. No 
unusual properties were detected until D-43856 became decreasingly 
responsive and was soon expelled from the object in a typical fluid 
eruption, exhibiting physiological abnormalities and mental faculties 
consistent with SCP-1904-1. D-4356 was placed among Site-17's 
samples and has continued to increase in mass. All further 
exploration by human test subjects has yielded similar results. 
Additional subjects terminated. 


Incident Report 1904-B 

Following extensive testing, SCP-1904 was dismantled on // , 
exhibited no anomalous properties in storage and was reclassified 
as Safe. Over the following months an exponential increase in 
birth defects became apparent within a rapidly expanding radius of 
the object's original location. Samples were found to match the 
properties of SCP-1904-1 and SCP-1904 was restored to its original 
location and configuration, whereupon the wave of abnormal births 
subsided. confirmed and _ potential instances of SCP-1904-1 
were subsequently confiscated, dissected and terminated while 
class-B amnestics were administered to much of the surrounding 
populace. Affected couples were sterilized following evidence of 
long-term contamination and compensated for what they now 
believe to have been a class action lawsuit against a fabricated 
overseas pharmaceutical company. 


Discovery: On November 06, __, an paper reported a string of 
"monster" sightings corroborated by multiple eyewitnesses over a 
three day period. Foundation operatives eventually tracked activity 


back toa allegedly closed for remodeling since the previous 
year. 48 instances of SCP-1904-1 were subsequently discovered in 
the establishment's walk-in freezer and _ living specimens 
recovered from local sewage tunnels. Restaurant staff and 
management remain unaccounted for. 


Footnotes 
1. Due to their similarity as anomalous fast food restaurants, a 
connection toSCP-2915is under investigation. 


« SCP-1903 | SCP-1904 | SCP-1905 » 


SCP-1905: Dino Hunter Model 6 


Item #: SCP-1905 
Object Class: Safe 


Special Containment Procedures: SCP-1905 is locked within a 
secure storage locker in the Site 83 anomalous weapon storage 
wing. Access to SCP-1905 is restricted according to standard 
anomalous firearm handling procedures. SCP-1905 is to be 
thoroughly cleaned before and after testing.