There are many mediums in which evil spirits may reside (most notably dwellings, persons and computers), each requiring its own specific rite of exorcism. The steps enumerated below deal specifically with human exorcism, or ridding the body of an undesired spirit/demon possession, in the Roman Catholic tradition.

Note: before performing an exorcism, evaluate the subject’s potential for violence (with the strength and malignity of the possession in mind), and restrain accordingly, usually with ropes, straps or duct tape.

Note II: The following ritual may or may not work with computers, depending on operating system and waterproofing. Still, it may be worth a try.

1. Priest is dressed in cassock, surplice and purple stole.