Line of Duty, BBC One, Sunday, 9pm
IT all came to a close in the interview room. And rightly so.
We all knew justice would catch up with this season's bad apple, DCI Roz Huntley, and how apt it was she got her comeuppance in the interview room belonging to AC-12.
Those long scenes where the police anti-corruption team rhyme off evidence numbers, 'for the benefit of the D.I.R', undoubtedly provided the best drama of the show.
The much anticipated finale of the fourth series of Line of Duty ended on Sunday night and saw AC-12 go head-to-head with Huntley, played by Thandie Newton, for one final time.
The team had been on her tail ever since her eyes pinged open with forensics officer Tim Ifield bearing down on her with an electric saw at the dramatic end of episode one.
We have been steered from one direction to another, but finally AC-12 caught her out. But what was unexpected was Huntley's knock-out blow.
While AC-12's impeccable stack of evidence finally linked her to Ifield's death, it was her prowess in taking others down with her that made great viewing.
After admitting to the accidental killing of Ifield, framing three innocent people including her own husband, perverting the course of justice and trying to get the anti-corruption unit shut down for their own corruption, Huntley looked like the weight of the world had been lifted from her shoulders.
Explaining she had acted in self-defence, the last trick up her sleeve saw her arrest pal Jimmy Lakewell whom she had cannily trapped into attending the interview as her solicitor, before implicating him in an even bigger conspiracy.
And as the crooked cop turned out to be a pawn in a much bigger game, she claimed: "I'm not a bad person".
Funny enough Huntley, you are.
Not only had she framed innocent people including her own husband for murder and killed a man, she had planted evidence and used her police knowledge and every trick in the book to avoid being caught in the act.
Most strings were tied up neatly in the last episode and most questions were answered, but there were a few annoying conclusions, such as the identity of Balaclava Man.
As an armed stand-off ensued at AC-12 headquarters after top cop ACC Derek Hilton and Lakewell's involvement in the Balaclava Man murders were exposed, Balaclava Man was shot dead, quite expertly by Superintendent Ted Hastings, played by Adrian Dunbar.
But what a let-down as Balaclava Man proved to be a bit of red herring and was in fact one of several Balaclava Men who were working on the orders of others.
One of the annoying questions left unanswered for me was what exactly PC Maneet Bindra's motives for passing on AC-12 secrets to the top cop Hilton. Then again, there has to be some unfinished business to be able to make another series.
The biggest question of all is whether ACC Hilton is the real H. Of course, Hastings is "satisfied" that Hilton was the senior bent copper who colluded with the late 'Dot' Cottan. Can we be sure?
"This is beginning to feel like a life's work," sighed Hastings as the credits rolled and his face faded away. Let's hope so.
All in all though, Jed Mercurio's enthralling drama is completely justified in getting the prominent Sunday night spot commanding a mainstream audience of 7.5 million.
While a fifth series is already commissioned, it could be up to two years before we see what AC-12 have to offer next time round.
My final question is what on earth is going to fill my Line of Duty void now?
