Robert Rubane Diaz
Summary: serial killer known as the "Angel of Death" nurse who was sentenced to death in 1984 for the murders of 12 patients between the ages of 52 and 95 by giving them lethal levels of a heart medication while working as a coronary care nurse at a community hospital in Southern California in the early 1980's.
Cause of Death: Natural causes
Died: August 11, 2010
Location: San Quentin, California