Colin Stagg is now in Police custody, Sadie's evidence is questioned, and a trial awaits.
Deceit, his or her's, that's what this final episode is all about.
I thought this final part was absolutely fantastic, what an unusual direction this story has gone in, after the curve ball, and some of the events in the last two episodes, it played out the way I was expecting it to, an absolute tragedy.
It does make you question some of the workings of the so called British justice system.
The acting of Niamh Algar has been of the highest order, she was sublime here. Some of the best acting I have seen this year, I would be stunned if this didn't win an award or two.
This really is drama at its absolute best, well done Channel 4! 10/10.