ROSWELL, Ga. â After 33 years, two months and six days, Roswell police arrested the man they believe murdered 8-year-old Joshua Harmon, whose body was found in a wooded area 100 yards from the apartment complex where he lived. It was the departmentâs oldest unsolved homicide. Master Police Officer Jennifer Bennett led the investigation for about four years. As an investigator of crimes against children, she knew the case would bring challenges, but she said she was determined to see it through. âThis case had a profound impact on the police department,â Bennett said. âThat any homicide, and especially a child homicide, would be unsolved for so long is incredibly frustrating. Some of us have grown up knowing of this case and to now have children of our own, it is distressing to know that there is a family that for 33 years has had few answers with regards to the death of their child.â