Good cop gone bad variation. A good cast, especially the lead roles. Andrew Buchan (Broadchurch) is particularly excellent in his role as drug gang leader. Not seen much of Leila Farzad but she does well as the detective Lou Slack who is playing both sides. Also nice to see Anton Lesser (Endeavour) in a different kind of role.
It all starts off a bit on the slow side but picks up in episode 2. This is not a shoot em up cop drama but more of a slow slide into a moral dilemma. The deeper detective Slack slides into the vortex of corrupt cop the tenser it gets.
My only gripe with the programme is that, for me, it should have ended at episode 4.
That, to my mind, would have been a perfect and more realistic, ending.
Episode 5 tried too hard to tie up loose ends and ended up unnecessary and unrealistic.
That said, it was definitely worth a watch.
Ignore the unfair critics who have rubbished this programme.