Summary: It's been over three years since 36- year-old Chad Donaldson was shot and killed after leaving a gas station in Belton, Mo. His parents, Craig and Jenny, tragically lost their son, but they haven't lost hope that the killer will be brought to justice. About 40 percent of the murder cases in Kansas City are unsolved. Many of those cases are considered cold. FOX4 Crime Files takes an in-depth look at some of these cases, each one representing a life lost, and loved ones searching for answers.
