Donna Hall & Michael Margaret

Donna Hall, an 18-year-old graduate of Douglas S. Freeman High School, and Michael "Mike" Margaret, a 21-year-old graduate of J.R. Tucker High School, were a well-liked young couple from the West End of Henrico County, Virginia, described by friends as high school sweethearts. On the evening of August 17, 1984, they drove off in Mike's Jeep after telling family and friends they were going on a two-day camping trip. Investigators later reconstructed their movements almost hour by hour that evening, placing them at a small gathering with friends before they were last seen around 11:45 p.m. Their whereabouts after that point have never been established.

On August 21, 1984, at approximately 6:25 p.m., a man walking his dog discovered the couple's bodies in a wooded area about 200 yards south of the 10000 block of Castile Road, near the Kings Crossing Apartment complex close to the intersection of Gaskins Road and Patterson Avenue. According to the Virginia State Police cold case listing, the Medical Examiner concluded that both died of stab wounds; news accounts citing detectives reported that their throats had been cut. Investigators estimated the killings occurred between roughly 1 and 2 a.m. on August 18, and a heavy rainstorm hours after the crime washed away vital physical evidence at the scene.

Several forensic details have shaped the investigation. Toxicology showed that both victims had Demerol, a narcotic pain medication, in their systems — Donna in what detectives described as an extreme amount — and investigators have suggested the drug may have been administered without the couple's knowledge to reduce their resistance. Mike Margaret showed defensive wounds indicating he fought his attacker, who detectives believe may have been injured in the struggle. Small drops of blood found in Mike's Jeep did not match either victim, giving investigators a potential third-party biological sample. Detectives have characterized the level of violence as "overkill," suggesting an emotional component to the crime, and have also explored the possibility of a drug-related motive.

The case has been reexamined repeatedly over the decades. Evidence underwent DNA testing in 1987 and again in 2006, and around the 31st anniversary in 2015 Henrico's Cold Case Unit — then led by Detective Thomas Holsinger, who had known Mike Margaret in high school — mounted a renewed publicity push that generated a wave of tips and a reward fund that grew to $6,500. Family and supporters maintain a "Justice for Donna Hall and Mike Margaret" memorial page. According to WRIC, police received DNA test results from a private laboratory in 2022 and began pursuing new leads.

As of the 40th anniversary in August 2024, the double homicide remained unsolved and is listed in the Virginia State Police statewide cold case database as Henrico County Police Division case 840821001. It has been described by Henrico investigators as the county's biggest unsolved crime, one of more than one hundred cold cases the division continues to work. Anyone with information is asked to contact the Henrico Police Cold Case Unit at 804-501-5848.