three years after matt podolak died of antifreeze poisoning. s about the cause. matt's fiancÉe, holly, her whole family infect suspected somebody at work headed out for him. but mark and his family, well, they were looking closer to home. how close? let's put it this way. the two sides of the family weren't talking anymore. and already existing mistrust ramped up in the hospital years before when matt was in the icu. that's when matt's brother, mark, began to wonder if holly was in some way responsible for matt mysterious illness. >> my mom and i had a specific conversation, i remember. it just thinking that she could've done this to him. and we were kind of like, i don't know, maybe. but at the time, we didn't know why he passed. >> and then, there was the funeral. holly's family said she was very upset, cried in the car before going in, but when sergeant quinn read the old case fall he found a curious statement from holly's friend rebecca vega. what sort of grief was this? >> she was back and forth talking to different individuals, almost like