Trail of Cthulhu: Eternal Lies
Culto di Glaaki
Glaaki, one of the Great Old Ones, has a small cult following, though that may be the wrong term for it. It can create what are called Servants of Glaaki, which are humans who have been forced into a zombie-like state. This happens by Glaaki driving one of his spikes through the victim’s chest and injecting a fluid, which keeps the victim from true death. Some have said that this impalement is the initiation to the cult of Glaaki, so it is not clear if he has any truly human worshippers.
The Cult is somehow responsible for writing the books called Revelations of Glaaki