SCP 2744 Tattletale. Being a field agent for the foundation is a fairly demanding gig, as far as jobs go.

Not only do you typically have to be a capable detective, you also have to routinely deal with dangerous situations and combat scenarios,

not even getting into the fact that you're often dealing with anomalous threats, generally with

little information. The foundation brings in as many qualified personnel as they can for these

jobs, regularly plucked from militaries and police forces around the world,

but even still, they can often get more than they bargain for.

SCP 2744 details a scenario in which a team is sent in to investigate a rash of very strange murders and discover that not everything is as it seems.

We were first greeted as someone named William Miller and informed that currently this anomaly presents no danger to us.

However, we should have informed all of our close family and

acquaintances of our love for them and made any or all amends, and made sure that

Foundation representatives are in possession of a binding and valid will, with the named

executor being a member of Foundation's staff.

Also, we must have accepted that further access to this terminal will result in our immediate

termination, and this termination will be excruciating.

After logging in to confirm all this, we proceed into the document.

After proceeding, we're given a timer counting down from 28 minutes and 33 seconds, along

with a warning that the cell we're in, along with all personnel in the vicinity, has been

permanently isolated and contained, with mobile task force members being notified of this location.

A flashing warning tells us that a threat entity is rapidly approaching.

We're then provided the SCP documentation itself, with an item number listed only as Tadletail and the class as uncontained.

Only one terminal is given complete access to edit and read the contents of this file,

and it's been air-gapped from any other networks to ensure isolation.

...