When troopers arrived, they discovered the bodies of Gary Deal, his wife Joan Deal, both 26, and their 3-year-year old son, Jason inside their home. Gary Deal was found lying on the floor near the front door. He was shot in the head multiple times and his throat was cut. Joan’s naked body was discovered on their bedroom floor. She was also shot in the head multiple times and had her throat cut. Jason was found lying on his bed in his pajamas. More than 40 years later, NJ State Police hope new DNA technology can solve the case. The Tape Room speaks to Detective Mario Nocito, of the New Jersey State Police Homicide South Unit.Anyone with information is urged to call 609-561-1800 extension 3354. Anonymous leads are also welcome.