. >> reporter: while emily's family tried to cope with their loss, state investigator don schnitker wasg on the assumption that her death was linked to her addiction. >> she did have a drug problem. she had an addiction to opiate medication -- prescription pills. >> reporter: an overdose would mean no crime, just a regrettable accidental death -- or even a suicide. but then, six weeks later, something that changed the entire focus of the investigation. emily's toxicology report came back. >> results came back clean. she wasn't under the influence of opiates at the time of her death. >> so it wasn't an overdose. >> it wasn't an overdose. >> reporter: no trace of the opioid pain pills emily had been abusing. there was nothing in her system that would have killed her. there was no alcohol in her blood. so now, investigators had to take a new look at the case, starting with the photos of the bruises on emily's body. remember, police saw a bump on her head, but during her initial exam -- the medical examiner found more. >> she had areas of trauma to all four sides of her head, so the front o

>> i don't know. >> reporter: agent schnitker wanted to know what might be the fazzino marriage. he listened to another 911 call. >> and he's taking everything of mine and trying to take pills, too. >> reporter: one week before her death, emily called 9-1-1 to complain about alex. >> he's like trying to take property that is not his. >> emily came home inebriated the night before, and i'd had it. i'd had it. and i grabbed whatever pills i could grab and i was gonna flush them down the toilet. >> and she got angry. >> she got angry. she called 911. >> reporter: no one was arrested or charged in the incident, but it seemed to be the breaking point. the next day, emily filed for divorce. then alex did the same. both asked for full custody of the children. and -- both were still living in the same house. a few nights later, emily called her father, rick. >> the words were saying one thing, the voice was telling me >> what was the voice telling you? >> she was scared. there was something wrong. >> reporter: they hung up around 6:00 p.m. two hours later, emily would be dead. >> i will