…patients who are often very sick, very old or very young — and access to drugs powerful enough to kill unobtrusively through an intravenous tube. And they work at institutions with an inherent aversion to litigation and publicity. This is just the tip of iceberg. I know that at least one of the experts in this article, forensic psychologist Katherine Ramsland (not quoted in excerpt above), has published a book about serial killers in medical sett…