This was marketed as a horror novella but is more akin to a dark academia mystery. There is some limited body horror elements but they are pretty minor. 
This is a great fall/winter night read. It’s short and punchy. The novella is heavy on the atmosphere and light on the depth. This book is far too short to waste time trying to misdirect the reader, and would have been better served by a less abrupt ending. 

The mystery itself is pretty interesting and the story taking place over a single night keeps the reader engaged. It jumps around and you have to piece together exactly what the real mystery is but it works out in the end. It is very open-ended and you don’t get a straight forward answer as to the character’s fate but it’s still pretty satisfying for me.

Audio specific review: the multiple narrators helps to keep the POVs straight. Because of the constant POV switches, I think it is probably better read in print or ebook format.