Once the reason for the murder and who was involved was explained the writer didn't seem to know how to resolve the various storylines to a sensible conclusion.
The police officer driving the whole storyline lost all the motivation and dedication that had carried her determinedly through her investigation (despite being 7 months pregnant).
The victim's sister having been unstoppable just melted away.
The ending was very weak and left far too much unresolved.
The first 5 episodes were intriguing and taut, but I felt I'd wasted my time because of the final episode.