Book by Mark Z Danielewski where:
A young LA tattoo artist named Johnny finds an unfinished academic paper (the incomplete life’s work of his friend’s murdered neighbor) that analyzes a cult documentary film, in which a family moves into a strange house, one that changes shape and size and hides an endless labyrinth in its walls. Johnny tries to edit and annotate the text, while journaling about his own life, as he starts to lose his mind.
It’s a story within a story within a story — about obsession, and hell, and grief and finding yourself lost (and I think a lot more), all written in the form of diary entries, transcripts, essays, poems, letters and footnotes.
It reads like a choose your own adventure book, and is itself a monster and a maze. Pretty dark and really beautiful.