The Oracle, by Robert Bloch

Robert Bloch wrote hundreds of short stories and over 30 novels. He was one of the youngest members of the Lovecraft Circle and began his professional writing career immediately after graduation, aged 17. He was a protégé of Lovecraft who was the first to seriously encourage his talent. However, while Bloch started his career by emulating Lovecraft and his brand of Cosmic Horror, he later specialized in crime and horror stories dealing with a more psychological approach.

Bloch was a contributor to pulp magazines such as Weird Tales in his early career, and was also a prolific screenwriter and a major contributor to fanzines and fandom in general.  Of course he is most easily identified as the author PSYCHO, the novel and screenplay, and sequels. ORACLE is a short story published in Penthouse, in 1971.