i just knew in my heart that the police would do their job and find the people that did this to mother and cliff. >> investigators confiscated every .25-caliber pistol they could find, hoping that one of them would match the murder weapon. >> i maintained those bullets in my secured work area. i never returned them to the sheriff's property room, knowing that i would one day get that firearm. >> but eventually, there were other crimes to solve, other evidence to process, and the murder of cliff and alma merck moved quietly into the unsolved file. ten years later, jim christopherson was promoted to homicide detective, but he never forgot the murder of cliff and alma merck. >> the case had always bothered me mainly because of the circumstances, the way they were murdered and just knowing that