iana Lynn Harris, 27, was last heard from by her family on July 15, 1981. She had recently moved to Big Pine Key, Florida with her children. The children left Florida on June 7 to spend the summer with their father in Michigan. When Diana failed to attend her sister's wedding in Illinois in mid-August, her family reported her missing. She had been dating and living with Gary Vincent Argenzio. Argenzio disappeared shortly after and, in 1982, was arrested in Mexico, extradited to Florida, sentence
