levi had been cheating on tara, but that doesn't quite tell the story. levi chavez some of his girlfriends names. tara's friend melanie says that that kind of thing had been going on ever since high school. >> and it wasn't just one girl, two girls, it was numerous girls. >> so you never really stopped? >> no. >> detective jones tracked down this woman, rose, a married mother of three. rose says, at the time of tera's death, she and levi had been sleeping together for two years. >> by the time i came around, i was shocked to be number three. >> number three? he was having a third affair? >> no, when he opened his phone, i was number three on his phone speed dial. >> llevi was open with you, not just that he was married, but in addition to being married, in addition to having an affair with you, and another girlfriend, someone who was, well, a little higher up in the hierarchy than you were, and you are okay with that? >> yeah. >> juggling multiple mistresses while married was apparently nothing new for levi. rose said, levi's multitasking skills made it all possible

. >> a few weeks after the trial, family and friends came together to remember tara chavez. on what would've been her 32nd birthday. for all of those who loved her. tara is never really that far away. >> i'll be in good company if something ever happened to me. i have [crying] i have my baby. she is my angel. ♪ ♪ ♪ >> i'm andrea canning and this is "dateline". >> she and her son danny were in the basement of their home when the doorbell rang. danny bounded up the steps to answer the door. and then the shots rang out. danny was hit, mark was shot in the abdomen. >> i saw my son holding his chest. i nearly was going to make it. >> why daniel out of all people? one of the sweetest kids i've ever met. >> her husband was rushed to the emergency room for surgery. >> i was just in total shock. >> you get a call that this is been another murder. >> correct. >> a man knocked on the door, said are you marc angelucci. then just started shooting. >> we were expecting to link up a murder in california to the attack here in new jersey. >> i just thought this is crazy. nobody safe. >> i had