Fairfax's Demonologia is a discourse on witchcraft published in 1882.
As the Ghostbusters and the Turtles conferred at the Firehouse, a discussion about the dangers of digitizing books on the supernatural came up. Ray Stantz decided to demonstrate one of the other effects of these books and held up a copy of Fairfax's Demonologia to Slimer in the Paranormal Containment Research Tank. Slimer immediately recoiled and tried to shield himself from the book. Ray, still with the book, took Donatello down to the basement and showed him the Containment Unit.
Fairfax's Demonologia is a mild deterrent to a ghost like Slimer.
- Fairfax's Demonologia is based on an actual book.
- Teenage Mutant Ninja Turtles Ghostbusters