Joseph and Linda Mayotte of Massachusetts were convicted last month . Man abducts , rapes three teens over ten years . Prosecutor says Linda allegedly became pregnant by her adoptive son , who was 21 . He faces 16 to 20 years in prison ; she faces 18 to 22 years . Now 21 , the adoptive son reportedly said in court : ' Let them burn in hell '
Joseph and Linda Mayotte of Massachusetts were convicted last month . Prosecutor says Linda allegedly became pregnant by her adoptive son , who was 21 . He faces 16 to 20 years in prison ; she faces 18 to 22 years . Now 21 , the adoptive son reportedly said in court : ' Let them burn in hell '