This is an account on the death of a horror writer who stumbled upon something he couldn't fight.
The story starts with Robert Blake already dead, then it goes back piecing the story from his journal entries and newspaper articles.
For some reason Blake was drawn towards an abandoned church where the Church of Starry Wisdom used to congregate. The cult used an ancient artifact, the Shining Trapezohedron, to summon a being that required sacrifices for all the knowledge it gave them. People started missing and the church was abandoned, but nobody wanted to be near it anymore.
Whether you like Lovecraft's writing or not, the atmosphere is always weird, eerie or terrifying and that's one of the reasons why I don't mind when it gets slow at times.
Horror