A drop of blood led to the arrest of a New York man who is suspected of killing his former in-laws more than 30 years ago.
Catherine and George Peacock.
Vermont State PoliceHe is accused of killing George Peacock, 76, and Catherine Peacock, 73, at their Danby, Vermont, home on Sept. 17, 1989, Vermont State Police announced in a news release.
"The blood sample had been tested previously during the investigation, as DNA testing technology was emerging, and that earlier test had been inconclusive," police said in the release.
Advancements in DNA testing have been used to help law enforcement solve a slew of cold cases.