John Albert Gardner III (born April 9, 1979) is an American convicted double murderer, rapist, and child molester. He confessed to the February 2009 rape and murder of 14-year-old Amber Dubois from Escondido, California, and the February 2010 rape and murder of 17-year-old Chelsea King from Poway, California, after he entered a plea agreement that spared him from execution. Additionally, Gardner attempted to rape 22-year-old Candice Moncayo of San Diego County, and had been previously incarcerated for the molestation of a 13-year-old girl.