Raises suspicions that remain answered

I just watched this movie for the first time, and I enjoyed it. The only thing is, it's very unsatisfying when a true crime TV movie doesn't answer the questions it raises.

In this movie, there was a lot of suspicion cast on Angela (Gwyneth Paltrow) and I kept expecting there to be a revelation that she was involved with the crime. But in the end, they just say that there are a lot of questions about this case that will never be answered.

It reminds me of another great true crime TV movie, "Echoes in the Darkness". Many questions are raised and they remain unanswered.