The mystery of Michele Dorr's disappearance from her father's backyard in 1986 finally yielded to persistent police work Thursday night when detectives unearthed the 6-year-old girl's, Hadden Irving Clark (born July 31, 1952) [1] is an American murderer and suspected serial killer currently serving two 30-year sentences for the murders of 6-year-old Michele Lee Dorr in 1986, and 23-year-old Laura Houghteling in 1992. [2] [3] [4] [5] [6] He was also given a 10-year sentence for robbery after stealing from a former landlord. [3], In 1986, Michele Dorr was six years old when she was stabbed and cannibalized. Six years later, in 1992, Laura Houghteling, 23, was stabbed, suffocated, and buried in a park approximately 12 miles from her home., He even told him about killing Michele Dorr and eating her flesh before burying her. Several years later, in 1999, he pleaded guilty to killing the 6-year-old girl in 1986 and received another 30-year imprisonment sentence., Her kindness cost the life of her beautiful, brilliant daughter who was home on vacation from Harvard. But this was just one of his many serial murders, beginning with a six-year-old girl whom he murdered to get revenge on his young niece for calling him a name., Hadden Clark, 64, is currently serving two 30-year sentences in Maryland for the 1992 murder of 23-year-old Laura Houghteling in Bethesda, and for killing six-year-old Michele Dorr in Silver.