Horror story or Psychotic fugue, It doesn't matter, It's great.
This Horror tale or (possibly) a psychological depiction of paranoid madness, I thought excellent. I will not give you a summary of the story as it can be viewed from two standpoints. That of the paranoid and delusional main character, whom, if you are to believe his thoughts, is caught in the middle of a grand conspiracy to prove him mad for the benefit of others or alternatively that of his psychiatrist who is either trying to help or destroy him (depending up your viewpoint). The complex story is built gradually through a series of hypnotic regressions, therapy notes and delusional episodes so it is not the easiest of reads (for those of faint heart) but it is certainly worth persevering. As the story reaches fullness it becomes littered with tiny clues to the truth. Like “Blatty’s "Legion” or “Redemption”, a couple of Stephen King novels, Dan Simmons “Drood” and a few others, this novel stands up as one of the great “Horror” novels of our time. I would certainly recommend it.