I have to agree with the other reviewers here, over several points.
I absolutely agree that this has been the weakest episode since the season opener.
Some continuity would be great. It's nice that Joe's departure was explained and there was even a mention of Celine, but Bethany and Shep? And what about the chap who was in at the end of season 4 (his only appearance?) replacing DC Edwards who is now miraculously back.
I agree too about the charges, ludicrous.
I too have had concerns about the behaviour of the officers for some time, they seem to have a cavalier approach, saying too much, often with little thought, seemingly oblivious to the lives they are destroying.
On the plus side, the location work was stunning as always.