I watched the entire series of “Burden of Proof.” If I have to describe it in a short sentence, DO NOT ACCUSE ANYONE until you have overwhelming evidence.
I give him credit that he was looking for his sister’s murderer for so long. At the same time, he accused his parents. Especially, his poor mother. His suspicion of his mom alienated her from her sisters, his two daughters and his wife. I understand he has anger towards his father but it doesn’t mean he killed his sister. Bottom line is, it’s the saddest documentary I have ever watched.
I hope he sincerely regrets what he did and asks for forgiveness from his mother. I hope the investigators eventually find out what happened to his sister.