Just to add to the mix - the guy who wrestled the bad cop to the ground is now married to James's Nesbitts ex wife (if I have it right!) and I think he's dodgey - maybe he took the envelope which was on the back seat of the car during the confusion.
His ex wife has yet to remarry and she used their savings to pay nasty Karl for the information about him cleaning the basement. I'm now confused about the whereabouts of these 2 different envelopes. !
I'm going to make sure I record the last episode when hopefully everything will fall into place, then if it doesn't I can play it again and again and again until I'm sure I've got it. Then I'll come on here and make sure I've really got it right:-)
Can I just remind people that if you are confused with the time changing from 2006 to present, having the subtitles helps a bit as it tells you (sometimes).