ducky | Points

So what I can remember is that the main character was a twin, but as a child her sister was murdered by the babysitters friend. He strangled her I think. The main character killed him, I am pretty sure...

I’m trying to remember a film(maaaaybe a tv show) where there where reporters or lawyers or something who had to go and listen to transcripts from a law case, and they had to be in these little boxes...