anthony gulluni was the newly elected district attorney for hampden county.ger to the ziegert case. how old were you when this murder happened? i was 12 years old, and i grew up in an adjacent place. you remember the case? i do. andrea canning (voiceover): as a lifelong resident of western massachusetts, gulluni understood what was at stake. that i now have inherited this investigation and have an opportunity and a responsibility to investigate this case and make my best efforts and my team's best efforts to bring justice for lisa and her family was a remarkable realization at the time. andrea canning (voiceover): gulluni also realized the asset he had in detective pfau. detective pfau had more experience certainly with this case, and had an institutional and historical perspective on the case that very few had at the time. andrea canning (voiceover): gulluni decided their best chance to crack the case would be to match pfau with an investigator who could bring with him a new perspective and the latest investigative tools. enter state trooper noah pack. you'r