The Antiquarian - David E. Grinnell

The pages of this diary belonged to a young British archeologist, Nicholas Ainsworth, known for his odd curiosity for the morbid and macabre. His expedition for deviant burials and historical artifacts in the Transylvanian Alps abruptly ruined with the approaching Nazi occupation, he seeks refuge in a mysterious old castle. As he settles into the abandoned gothic ruins, strange phenomena cause him to question his sanity...and if he is truly alone.