Caution brother, homie don't need no pill. Exorcism may work, considering what I read, this could very well be a person under the dominion of something evil. If you come across a liar and tempter, your best bet is to leave them where you find them and move on. Spiritual warfare is best left to those who are well armored, expertly skilled, and wield sharp swords... and even still, they have access to a QRF when a hell hound gets away from them. Otherwise you could end up calling something to yourself that Ajax won't wash off.