The 'Solemn' pledge.

[[TNS-D] Sanitorium]

The note is written on a piece of cardboard, it is specked with blood. It has various depictions of torture and violence along the outside edges. It has a depiction of Death, brandishing his scythe openly. One copy is found in the UCH, another in the District Six entrance tunnel.

There is something inside of me.
It is coming out to kill you.
My blood runs cold.

The time has come. There will be no end. The toll will rise, as Death reaps his prize.
I cannot be appeased. I cannot be fixed. I continue the murder.
One lie leads to another. An indecipherable web of death and despair.
The desperate fear me. The haunted hate me. I am a harbinger of death.

Solemn will continue on.

The word 'on' appears to be written in blood.