Colonial Parkway murders

In each incident, a young couple sitting in a vehicle was targeted and both were killed. Three pairs of victims were recovered, and another couple remains missing and presumed dead. Several additional homicides have also been tentatively linked to the four confirmed cases. The causes of death included strangulation, gunshot and stabbing. There was no evidence of theft or sexual assault in any of the cases. The killer drove his victims’ vehicles away from the murder sites. The linking of the four crimes is circumstantial.
In January 2024, authorities announced that at least two of the murders (David Knobling and Robin Edwards) had been conclusively linked to an official suspect, Alan Wilmer Sr., a local fisherman who died in 2017. Wilmer was also linked through DNA evidence to the previously unrelated murder of Teresa Lynn Spaw Howell. Wilmer has been described as "suspect number one" in the presumed murders of Cassandra Hailey and Keith Call but was freed after an FBI polygraph. Provided by Wikipedia