Harvey continues to insist that he was a mercy-killer, but the facts indicate otherwise.  Over the course of eighteen years in several different institutions, he killed for petty reasons as well as mercy.  One man he just didn't like; another he killed out of revenge.  And then there were the acquaintances he poisoned with arsenic who just happened to have annoyed him.  There seems little doubt that he was engaged in occult practices when he chose some of his victims, and