Robert, I agree with Deb.  I know how much the murder of that young girl affected you and some of these old cases might well be just as stressful.  You need to relax and decompress, not add more stress.  The programs you mentioned would be rewarding and you would be laying those extra treasures away up in Heaven.  Instead of the mental anguish of the cold cases, think of the heart warming feeling that would come from helping others...