I watched a documentary last night about a nurse who murdered dozens of his patients. Many were not terminally ill, or even in pain. The item was an interview with him. He didn't seem mad, just cold and calculating.
The two disturbing things were the total grief of the relatives of his victims and there was no need for so many victims in the first place. There were suspicions of what he was up to, but he was asked to move on from hospital to hospital and no one bothered to alert the next facility that he was under suspicion. The excuse raised was that each hospital was afraid they would be sued for wrongful termination of employment. So he kept on murdering.
And the parallels were obvious. Except it wasn't just suspicion, often the victims spoke, but the perpetrators were shuffled off to different jobs, or allowed to escape back to their own countries, never to face justice. Then of course they probably carried on their offending, thinking they were invincible. So more lives were ruined.
http://www.advisory.com/Daily-Briefing/ ... -his-story