"Shadows are a form of free spirit. Darker, more menacing than the average
spirit. Most are elementals or former allies, but there are other kinds. Some 
can be described as demonic. They revel in bloodletting and can be difficult to 
control. Some authorities believe that shadow spirits may be addicted to the 
psychic energy of humans suffering great physical or emotional torment. They 
have been known to ally themselves with or to enlist the aid of criminals or the 
insane."