Charles Edmund Cullen
Former nurse Charles Cullen is a serial killer from the United States. Over the course of his nursing career, he has admitted to murdering 40 victims. More than 400 patients are believed to have been killed by Cullen, according to police. As a child, he had a difficult and unstable mentality, and he attempted suicide at age nine.
By administering a medication overdose, the killer killed multiple individuals in many hospitals. He confessed to having committed other killings before being captured and accused of one murder. It will be more than 100 years before he will be eligible for parole as of 2022.
