Demon
The contemporary Roman Catholic Church unequivocally teaches that angels and demons are real beings rather than just symbolic devices. The Catholic Church has a cadre of officially sanctioned exorcists which perform many exorcisms each year. The exorcists of the Catholic Church teach that demons attack humans continually but that afflicted persons can be effectively healed and protected either by the formal rite of exorcism, authorized to be performed only by bishops and those they designate, or by prayers of deliverance, which any Christian can offer for themselves or others.
Alien Exorcism
Dr. Davide Piso is a courageous scientist who has been studying thousands of cases involving alien abductions with the aid of hypnosis. When the scientist decides to help Saturnia, a seductive teenager that believes herself to be an alien abductee and shows a clear attraction for him, he faces an insurmountable problem: once hypnotised, Saturnia cannot leave the trance condition anymore, hence giving manifestation to Hexabor of Ur, an alien entity coming from Mesopotamian ages. Hexabor considers himself a demi-god and wants to exploit a special human energy: the soul.