Shirley Winters (born February 27, 1958) is a convicted murderer, arsonist, and suspected serial killer from upstate New York. In 1980, she smothered her five-month-old son, Ronald Winters III. In 2007, she drowned 23-month-old Ryan Rivers. She is also suspected of killing three siblings in childhood, setting a fire which killed two of her older children in 1979, and on the day prior to that killed a friend's three children. Per a plea bargain, she cannot be prosecuted for those.