Review of A Death in Oslo

I really liked this episode, this story really is mysterious, they still don't know the girls identity or what happened to her... It wasn't suicide for sure... I really like the volume 2 of this show, I don't understand why people are rating it so low... It's a lot more mysterious than the first part because you really have no idea what happened to these people... I only didn't like the Tsunami episode,doesn't fit in...