Parapsychologist's Handbook

A Monograph for the 1890's, 1920's, & Contemporary Adventures

This monograph reveals the real-world science of the paranormal, Parapsychology (its history and methods), how to play a parapsychologist, how to run a Call of Cthulhu campaign centered around a ghost-hunting group, and how to simulate various non-Mythos entities and psychic powers in your campaign.