This story is from The Essential H.P. Lovecraft Collection. The Call of Cthulhu is about a young man who's come to understand that ignorance is bliss. What he's learned has him scared for his life and his sanity.
Professor George Angell died suddenly from a fall, and his great nephew, Francis Thurston, begins to think it was not an accident. While going through his great uncle's papers Thurston is fascinated by, and begins to investigate, an evil looking statue that was inspired by a dream. What Thurston eventually uncovers is something he wishes he'd never brought to light. Reading Lovecraft after dark can be hazardous to peaceful slumber. Highly recommended.