Francis Scott Walker Jr. was gunned down in 2008, and his family still hasn't received any answers about the circumstances surrounding his death.

Michelle Walker, the victim's mother, says she's frustrated with the way authorities have investigated her son's murder.

Walker's death greatly affected his family, but it also may have changed the way the Union County Prosecutor's Office investigates murders.

Prosecutors say Walker's murder is one of the reasons the agency formed its homicide task force. At the time of the murder, the office says homicides had about a 70 percent unsolved rate. Since then, the trend has been reversed and the solve rate has gone above 70 percent.