Parece que poderia ser a Nossa Senhora das Trevas de Fritz Leiber. O livro trata, em parte, da pseudociência fictícia da megapolisomancia, que foi desenvolvida pelo ocultista ficcional Thibaut de Castries, um associado de Clark Ashton Smith. A entrada da Wikipedia sez
According to De Castries, excessively large cities pose a clear danger to the people living in and near them by allowing mass quantities of certain substances (city-stuff) to accumulate, which in turn draw the attention of paramental forces. Through the manipulation of the paramental forces, a megapolisomancer could predict and alter the future.