A father uses the serial number on a hand gun in an attempt to track down his daughter's killer. The truth he uncovers is an unsettling reminder of the dangers of keeping handguns. A father uses the serial number on a hand gun in an attempt to track down his daughter's killer. The truth he uncovers is an unsettling reminder of the dangers of keeping handguns. A father uses the serial number on a hand gun in an attempt to track down his daughter's killer. The truth he uncovers is an unsettling reminder of the dangers of keeping handguns. A father uses the serial number on a hand gun in an attempt to track down his daughter's killer. The truth he uncovers is an unsettling reminder of the dangers of keeping handguns.