We often equate charm with "goodness," even though there is no connection between the two qualities.
Charismatic people who choose to use their gift to carry out evil are especially dangerous.
Another murderer who used potassium....
Before Orville Lynn Majors, LPN, joined the nursing staff at Vermillion County Hospital in Clinton, Indiana, in 1993, only around twenty-six people died there per year [snip] In only twenty-two months of his service there, 147 people died, most of them while he was working. Majors seemed oblivious to the fact that someone would eventually grow concerned. A nursing supervisor started asking questions.[snip] a 1.5 million-dollar investigation that covered 160 deaths between May 1993 and February 1995 revealed that Majors sometimes took his own initiative in "treating" patients, something for which he had no authority. Investigators exhumed fifteen bodies to examine tissues, finding that at least six deaths were consistent with the administration of epinephrine and potassium chloride. Most had experienced a rise in blood pressure before their hearts had stopped. Police searched Majors' residence, where they found a stash of suspicious syringes and needles, along with the two drugs. They also found potassium chloride in vials in a van owned by Majors' parents and driven by him.