pneu·ma·to·pho·bi·a -- n. 

1.  The fear of spirits.

The Complete Book of Devils and Demons by Leonard R. N. Ashley

Inside demons are courted for power and feared for disease. Princes of Hell and the undead walk by night to prey upon the living. Here is the story of how evil has been conceived, embraced, and combated over time, including the rise and fall of black magicians, astrology, spiritualism, and more. This is a complete history--of the dark side.