From the back of the book:
The Night Clerk is a system agnostic scenario usable in any modern horror role playing game. Characters check in at the Sleep Easy Inn, a cheap hotel, for the night and wake
up... somewhere else. At first, it looks like the hotel but the windows show only a black void outside and no one can open a door or break a window to escape.
The guests are now trapped in an infinite labyrinth designed to break their minds. Escape is possible but only if they find the Night Clerk, the person who trapped them in the first
place or the 13th Floor, the heart of the labyrinth.
The Night Clerk is a full color zine featuring a new monster, tables for unnatural artifacts, random encounters, and more! It’s a flexible framework to make a unique architectural horror experience for your playing group.