OK, the plot is more than a bit on the far-fetched side and is initially a bit difficult to follow - but it gets slightly clearer as the episodes go by. The first three instalments are actually rather boring, but closer to the end the storyline becomes better paced and more thrilling to watch. But compared to the last series of "Line of duty", this feels mostly phoned in.

And why cast someone like Richard Madden in the lead role? Richard Wooden would be a better name for him. He's got two (2) facial expressions: 1. Angry and sullen, 2. Severely constipated. A 30-year old police officer with a 10-year old kid seems a bit unlikely as well.

And don't get me started on his mumbling voice and unintelligible, monotone scottish accent, speaking without moving his lips at all. Totally unwatchable without subtitles, like so many British series of late, like Charlotte Riley in "Press". Madden is almost as bad as Tom Hardy in this regard.

With a better lead actor, I would have scored this show an 8.