Nice series
I found this series compelling, no disturbing plotholes, of course some red herrings.
I was enjoying it very much but there was one situation I burst out laughing:
SPOILER!
The confrontation Annie, Leighton and Oliver Tench.
Leighton and Annie made a plan to overpower Tench.
So that ended up Tench with a knife to the throat of Leighton, Annie miles away with only armed with a police stick...
Then Annie could, after some talk of Leighton, just put the shackles on Tench,
who was obviously a stone cold killer!
That was too much for me to comprehend...
END SPOILER
I like Siobhan Finneran, who did a great job in Happy Valley.
Great scenery in Scotland.