The Walls of Madness by Craig Saunders

This novella is about the right length to explore a schizophrenic man's fixations, obsessions, hallucinations, and his inability to cope with the real world we all share or the nightmare world that exists only (presumably) inside his head. We're also presented with some glimpses of the early childhood origins of the symbols and themes that inhabit this man's hellish world.

And the book doesn't go much beyond what I've relayed above. Does it need to? No, I don't think so. To me, it seems that...