Nursing his victims to their graves, this killer targeted elderly patients. Name that "Angel of Death".

As "The Angel Of Death," Charles Edmund Cullen worked as a nurse in a number of hospitals from 1984 to 2003 but kept getting punted out for suspicious behavior. As it turns out, those in charge had reason to be suspicious. Cullen is believed to have killed up to 300 victims, though he only confessed to murdering 40 by poisoning them with unprescribed medicine.

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