H.P. Lovecraft's The Haunter of the Dark

In Providence, Robert Blake, a young writer with an interest in the occult, becomes fascinated by a large disused church on Federal Hill which he can see from his lodgings on the city's east side. His research reveals that the church has a sinister history involving a cult called the Church of Starry Wisdom and is dreaded by the local migrant inhabitants as being haunted by a primordial evil.