Note on a Missing Subject is a document in The Forgotten Sanctum.
"Subject P-0706 broke free of its cell and makes slow progress toward other parts of the facility. We cannot cross from one end of our library to another without spores dusting our robes from some unseen limb of the colony.
I have reported the matter, but our chief librarian is characteristically unconcerned. Should that thing cross into the restricted stacks, I hope she remembers who warned her."
An addendum is scribbled below:
"Boras has gone missing. Likely infested, digested, or worse. What began as an irritation has escalated to a tragedy. I haven't the heart to tell the Archives staff to call off the search. Once the dust settles, I will take it upon myself to find them a new library mascot."