Donald Barker, 62, and his 63-year-old wife Sue Barker were found shot to death in their Whites Farm Road home in Iredell County, North Carolina, on September 15, 2005. Their killings were linked to the January 20, 2005 double homicide of James and Ruth Delet Powell in Union Grove; investigators determined the same firearm was used in both crimes. Both couples were well known locally, and the slayings upset the community.

Authorities arrested 65-year-old Barbara Ann Evans on July 26, 2006, charging her with four counts of murder in connection with the Barkers and the Powells. Evans had personal ties to both couples, having been a frequent customer at the Barkers’ convenience store and having known James Powell through her late husband’s antique car hobby. Evans had purchased handgun permits in 2004, which investigators examined during the probe. No motive has been established.

If anyone knew the Barkers or the Powells, or has information about these killings, please share what might help investigators or the families.