Rockingham County -- Monday marks one year since a gunman killed Troy and LaDonna French in their home.
Investigators believe they're closer to finding a suspect who's gotten away with murder.
Monday, Rockingham County Sheriff Sam Page told WFMY News 2 the department has sent more evidence to the state crime lab for DNA testing.
The sheriff's department has the suspect's DNA profile, but does not know who the DNA belongs to. The samples do not match anything in the criminal database, Sheriff Page said.