[5] Henderson was released in July 1981, moving into the home of tobacco farmer Ivan Barnett, his new wife's father.
[6] Henderson then murdered his in-laws, Ivan Barnett, his wife Marie, and their eleven-year-old son Clifford in Cherry Fork, Ohio on January 21, 1982.
[6] On January 25, 1982, he murdered physician Murray Ferderber and retail clerk Dorothy Wilkinson[7] in Palatka, Florida.
[6] He then murdered hitchhikers Robert Dawson, Frances Bell Dickey, and Vernon D. Odom[8] in Hernando County, Florida on February 4, 1982.
[6] After killing the twelve victims, Henderson turned himself in at a jail in Punta Gorda, Florida on February 6, 1982.