The tooth-growing process has been described by patients as 
extremely painful, and similar to the teething pains experienced by 
children and young adults during the development of normal teeth. 
Patients have described a strong desire to mitigate this sensation by 
biting or grinding affected teeth, and in the case of teeth formed in 
areas without the appropriate muscular or skeletal structure for 
biting, patients will rub or pound the teeth against solid objects. This 
action is to be discouraged in patients whose disease progression 
requires curtailment, as it will frequently lead to further skin 
lacerations and the creation of new teeth. It was due to this 
behaviour that the ability to transfer infection through tooth-to-blood 
contact was discovered during an interview with an SCP-2450 
patient. 


Addendum 2450-A — Circumstances of discovery: SCP-2450 


was first identified from routine searching of medical literature, and 
classified as an SCP phenomenon distinct from hyperdontia on 
19/02/2009. Information suppression policy was applied 
successfully, and the pattern of outbreaks was used to trace the 
source to the service station. Thereafter, quarantining and 
careful experimentation revealed the male bathroom in Wing B, in 
use with no known anomalous effect since the service station's 
opening in 19838, as the initial source of infection. SCP-2450-1 (see 
Addendum 2450-C) was discovered lodged behind a cistern during 
the dismantling of facility equipment. 


Addendum 2450-B — events of 15/07/2008: 


Interviews with cleaning and security staff, and review of security 
footage has tentatively identified early morning 15/07/2008 as the 
moment at which the bathroom became the source of SCP-2450 

infection. 


Security footage log: 


03.17 Three men enter the service station. All three wear 
black hooded tops with hoods up. One, designated 
POI-2450-a, carries a large empty-looking backpack, and 
another, designated POI-2450-B, holds a green 
implement (likely SCP-2450-1) which he passes from 
hand to hand frequently. The third man is designated 
POI-2450-y. 


03.19 The men halt outside the bathroom in Wing B and 
engage in discussion. 


03.22 The men enter the bathroom, the last looking 
around before he closes the door. 


<period of unremarkable activity omitted> 


05.59 2450-a and 2450-8 exit the bathroom. 2450-« still 
carries the backpack, which appears fuller and heavier. 


06.00 The men walk quickly to the main entrance, where 
2450-B stops. 


06.00 2450-8 puts his hands into his hooded top pocket, 
and then pats the pockets of his trousers. 2450-8 turns 
back towards the interior of the service station. 


06.01 2450-8 starts to walk back inside, but 2450-a puts 
a hand on his arm and stops him. The two engage in an 
animated discussion. 


06.03 2450-a and 2450-8 walk to a car, later determined 
to be stolen, and drive away southbound. 


POI-2450-y does not exit the bathroom. 


The cleaner on duty on 15/07/2008 reports that he recalls one of the 
bathroom stalls being locked for an unusually long time, and upon 
returning later to clean the stall, discovered a large quantity of white 
gravel of varying grain size (believed to be dental matter) on the 
floor and toilet lid. 


Addendum 2450-C — SCP-2450-1: 
Object Class: Safe 


Special Containment Procedures: SCP-2450-1 is 
stored in Reliquary 87B-6, locker 12004. 


Description: SCP-2450-1 is a green plastic toothbrush 
of unknown make and manufacture. 


Brushing teeth with SCP-2450-1 causes the teeth to be 
worn down at a very rapid rate — approximately five 
minutes of brushing is sufficient to remove an entire 
molar. No other tissue is damaged by this brushing 
action, even though the brush may be used to remove 
entire tooth roots. 


Embossed text on the back of the handle reads 'For non- 
oral use only’. 


« SCP-2449 | SCP-2450 | SCP-2451 » 


SCP-2451: Love Through Time, Space and Species 


Item #: SCP-2451 
Object Class: Euclid 


Special Containment Procedures: The Site-721 L-Type HACC 
containing SCP-2451 is to be modified to include temporal integrity 
seals1. AS SCP-2451-1 and SCP-2451-2#14's locations are 
currently unknown, and SCP-2451-2 emergence events have not 
ceased and indeed become more prevalent, all previous 
containment measures not directly related to the containment of 
SCP-2451-1 will remain in effect. 


Emerging SCP-2451-2 instances are to be subdued non-lethally if 
possible, but with deadly force if necessary, and are to be housed in 
separate M-Type HACCs and supplied with basic amenities unless 
otherwise indicated. In those cases where, due to the unpredictable 
temporal and spacial location of SCP-2451's remote terminus, 
standardized Humanoid Anomaly Containment Cells are not 
sufficient for reliable containment, specialized containment is to be 
designed and realized by this project's Senior Containment 
Specialist, at which time these procedures are to be amended. 


Designation Emergence Containment 
Procedures 
SCP-2451-2#94 2010-02-12 To be housed within 


an M-Type HACC 
modified to include a 
4mx4mx2.5m 
(Ixwxh) basin filled 
with brine (24% 
VigCio). 
SCP-2451-2#145 2010-11-24 To be contained within 
a Reinforced 
Anomalous Cadaver 


of what seemed to be a significant cipher proved to translate into a 
long and painstakingly thorough list of extremely unofficial synonyms 
for a human 


Likewise, information gained from SCP-270-1 have both [DATA 
EXPUNGED] preventing a possible XK-class end-of-the-world 
scenario, and listed ‘secret ingredients’ of Dr. Rs widely praised 
cherry pie. As it is impossible to determine how useful portions of 
SCP-270-1 will be, personnel are advised to choose whatever 
segments of SCP-270-1 they deem to be most promising. However, 
some portions of cipher are either too intricately encrypted for our 
most perspicacious personnel to decode, or indeed may hold no 
meaning at all. 


Attempts to decode SCP-270-1 are continually ongoing (see 
Addenda 270-D and 270-E). 


Addendum 270-A: A probe was extended a total of meters 
along the wire before the maximum extension length was reached. 
The matter has since been declared not of sufficient interest to merit 
a more thorough examination. 


Addendum 270-B: As of / / , military time, the unidentified 
female voice of SCP-270-1 stuttered for seconds before breaking 
down into what researchers described as ‘disconsolate sobs,’ 
pleading to be [REDACTED]. This continued for seconds before 
audio cut off abruptly toa -minute excerpt of SCP-270-1 from // . 
Immediately afterwards, SCP-270-1 proceeded as usual, the only 
noticeable difference being that the voice narrating SCP-270-1 was 
male. 


Addendum 270-C: Further examinations revealed that this was in 
fact not silence, but audio stimuli both too high or too low pitched for 
human perception. additional unidentified languages have been 
discovered upon supplying Outpost Delta with appropriate audio 
equipment. 


Addendum 270-D: As of late, SCP-270-1 has been becoming 
noticeably more difficult to decode. This includes utilizing more 
convoluted methods of encryption, loud background noises being 
added while the narrator is speaking, multiple voices speaking at 


SCP-2451-2#168 2013-03-17 


SCP-2451-2#177 2014-06-28 


SCP-2451-2#243 2016-11-02 


SCP-2451-2#275-291 2016-11-03 


Locker (RACL). 

To be contained ina 
Level 4 Bio-Safety 
Cabinet. This is to be 
remotely checked for 
leaks twice a day. In 
event of a leak, please 
see 2451/ConBrch/ 
Ti-15432A:v1.32 and 
evacuate the Site. 

To remainina 
permanently powered- 
down state in this 
Site's Anomalous 
Vehicie Bay (AVB). 
Containment 
implausible at this 
time. Instance 
displayed physical 
traits of 
Macropanesthia 
rhinoceros (Giant 
Burrowing Cockroach 
and Elephas maximus 
(Asian Elephant). 
Instance was in 
possession of 
advanced technology 
and disappeared after 
emergence, location 
unknown. A Priority 
Alpha-Red notification 
has been dispatched 
to aii Known partners. 
Vocalizations from 
instances are to be 
disregarded by 
personnel assigned to 
their destruction. 
Security Personnel not 


complying with the 
previous instruction 
will be terminated. 
Instances are to be 
disposed of as Class- 
IV biological hazards 
using all available 
equipment. Note that 
sustained fire is 
necessary fora 
100% kill rate. 


The remains of SCP-2451-2 specimens exhumed from the backyard 
of SCP-2451-1's former residence at Road, Santa Cruz, CA 
are to be kept in this Site's Exo-Biological Wing for research 
purposes, available upon a request authorized by personnel with 
2451/3 clearance. 


+ SCP-2451 Containment Procedures v1.04 


Special Containment Procedures: Although 
SCP-2451-1 is not anomalous in itself, it is to be housed 
within an L-Type HACC modified to include temporal 
integrity seals1. Interviews with SCP-2451-1 are to take 
place at a location where SCP-2451-1 can be positioned 
so that SCP-2451 is contained within the same room. 


Emerging SCP-2451-2 instances are to be subdued, 
preferably non-lethally, and are generally to be housed in 
separate M-Type HACCs and supplied with basic 
amenities. In those cases where, due to the 
unpredictable temporal and spacial location of 
SCP-2451's remote terminus, standardized Humanoid 
Anomaly Containment Cells are not sufficient for reliable 
containment, specialized containment is to be designed 
and realized by this project's Senior Containment 
Specialist, at which time these procedures are to be 
amended. 


Designation Emergence Containment 


SCP-2451-2#14| Unknown 


SCP-2451-2#94| 2010-02-12 


SCP-2451-2#145 2010-11-24 


SCP-2451-2#168 2013-03-17 


SCP-2451-2#177 2014-06-28 


Procedures 
To be housed with 
SCP-2451-T. 
To be housed 
within an M-Type 
HACC modified to 
include a 4 m x 
4mx2.5m 
(Ixwxh) basin filled 
with brine (24% 
MgCis). 
To be contained 
within a 
Reinforced 
Anomalous 
Cadaver Locker 
(RACL). 
To be contained in 
a Level 4 Bio- 
Safety Cabinet. 
This is to be 
remotely checked 
for leaks twice a 
day. In event of a 
leak, please see 
2451/ConBrch/ 
Ti-15432A:v1.32 
and evacuate the 
Site. 
To remain ina 
permanently 
powered-down 
state in this Site's 
Anomalous 
Vehicle Bay 
(AVB). 


The remains of SCP-2451-2 specimens exhumed from 
the backyard of SCP-2451-1's former residence at 
Road, Santa Cruz, CA are to be kept in this Site's 


Exo-Biological Wing for research purposes, available 
upon a request authorized by personnel with 2451/3 
clearance. 


Description: SCP-2451 is a roughly circular, nonobservable 
temporal and spacial anomaly with an approximate radius of 75 cm. 
SCP-2451 is not independently mobile but remains permanently 
fixed at 46°45'28.5"N 100°35'51.8"W, approximately 8.4 meters 
below ground, at Site-721. Pre-Serapis, SCP-2451 was fixed ata 
point 2.23 m due eastwards of SCP-2451-1, formerly Lt. Col. 
Abraham Francis Mary Gustowski (b. 07-03-1929). SCP-2451 
appears to be mono-directional, with the observable terminus in this 
reality construct displaying characteristics of a fixed-state portal. The 
non-observable terminus appears to be able to connect to an 
unknown number of divergent reality constructs. It is currently 
unknown whether SCP-2451 is connected to a single mobile 
terminus or a set of multiple fixed termini, each anchored to a 
specific reality construct. 


SCP-2451 activates at irregular intervals, producing an instance of 
SCP-2451-2. SCP-2451-2 are native to the temporal reality 
construct SCP-2451 connects to at that time, and vary wildly in 
appearance. Instances of SCP-2451-2 appear irate and hostile 
when emerging from SCP-2451, possibly as a side-effect of 
traversing SCP-2451. Interrogation of SCP-2451-2 instances reveals 
a common goal, to assassinate an individual held responsible for 
atrocities in their native construct, most often because their role 
during a historical conflict was directly linked to developments in its 
Originating construct. 


SCP-2451-1 has indicated its involvement in Project Restful Sleep, a 
classified United States Army project pioneered by Gen. Bowe in 
1962. No official documentation has been recovered on the project, 
but statements from SCP-2451-1 regarding affiliated locations, 
material resources and personnel have been verified. Main premise 
of this project was that using primitive temporal tunneling algorithms, 
a temporal anomaly could be created linking a fixed-state terminus 
in the past to a current fluid-state terminus. 


Research began in December 1956 and continued through to 1965, 
culminating in one operational test on 01-03-1966, using an early 


prototype. SCP-2451-1 indicates this test yielded no discernible 
result, and funding was cut in July 1966, ending any further 
research. SCP-2451-1 was honorably discharged in the aftermath of 
the project's disbanding. SCP-2451-1's responses to questions on 
Project Restful Sleep and the operational test, and neurological 
examinations performed on SCP-2451-1, indicate the administration 
of primitive amnestics. These were not 100% effective however, and 
SCP-2451-1 has been in possession of most of his memories since 
1973. 


SCP-2451-1 indicates the first instance of SCP-2451-2 appeared 
approximately 7 months after his honorable discharge. 


Addendum 2451-A-01: Disappearance of SCP-2451 Post-Serapis 


On 2016-11-02 00:00:31, security footage shows SCP-2451-2#14 
abruptly appearing inside SCP-2451-1's HACC. Both 
SCP-2451-2#14 and SCP-2451-1 show signs of extreme distress, at 
which point the feed is interrupted by static for approximately 1.4 
seconds. Footage then shows SCP-2451-1 HACC to be completely 
empty. SCP-2451 and SCP-2451-2#14 are at this point presumed to 
have entered SCP-2451. Their locations are currently unknown. 


After this event, emergence events have become more frequent, 
and have posed a higher threat to Site security than Pre-Serapis. 
Suggestions for the escalation of this project's containment 
procedures are currently being evaluated by its current Project Lead. 


Addendum 2451-A-02: Recovery and preliminary containment 
notes 


SCP-2451, SCP-2451-1 were recovered from the Sunshine Villa 
Assisted Living Complex in Santa Cruz, CA on 08-07-2009 after the 
new owners of his previous residence found human and non-human 
remains in the backyard of their property. Field Agents embedded in 
the Santa Cruz Police Department steered uniformed units away 
from the scene and coordinated the deployment of Foundation 
assets to isolate witnesses, handle the administration of amnestics, 
and control traffic. 


SCP-2451-2#14 was found on 10-03-2009, sleeping in a car ata 


Walmart parking lot in Santa Cruz, CA. It was recovered by a 
Foundation extraction team after patrolling police officers ran her ID. 
SCP-2451-2#14 was homeless and living under the assumed 
identity of Ethel McAllister. 


Addendum 2451-A-03: Excerpts from interviews with SCP-2451-1 


Log date: 08-08-2009 
Interviewer: Dr. A. E. M. Gunther (AG) 
Interviewed: SCP-2451-1 


AG: So tell me Mr. Gustowski, do you have any idea why 
you're here? 


SCP-2451-1: Sure do. I'm going to guess it has 
something to do with what | buried in my backyard before 
those asshole bankers foreclosed on my home. 


AG: Right. Are you aware of the nature of the bodies we 
exhumed? 


SCP-2451-1: Kinda hard not to be, son. One of those 
things had a beak the size of my entire arm, and about 
twice as wide. Sharp too, | got the scars right here. 
[subject begins to pull up the sleeve of his coverall] 


AG: That's fine, Mr. Gustowski, | believe you. So, why 
didn't you report this when they appeared? 


SCP-2451-1: [subject leans across the table and raises 
his eyebrows] And what would the police have said if I'd 
told them an 8' birdman appeared behind me out of thin 
air and attacked me? 


AG: You have a point. 
SCP-2451-1: [laughs] So did that beak, son.