Watched them all and felt rather let down at the end -felt we have been played with, led up the garden path and left there. The tantilising realisation that the killer has been in the police station, interviewed, given DNA under the noses of the police and still let go - shades of the Yorkshire Ripper and Ian Huntley, has spoken to the leading police officer, and lots and lots of little clues, but still no nearer to nabbing him. Lots of loose ends, and for me, the spectacularly unconvincing reaction of the wife, to, in the same breath, brand her husband a groomer, and then later, have rough sex with him - what as an acceptance? Would you really want to do that with your husband hours after finding out about the affair? Things left hanging like the obvious corruption in the PSNI and the 'weakness' of its most senior police officer with his infatuation with GA ( past infatuation or present?)
Like others on here I have 'enjoyed' this drama, or rather felt compelled by it, but I am not sure I would watch a second series, dragging these crimes out even further. But, like most serial killing crimes, they cannot be solved, literally within days or weeks, so that I guess is realistic.
I now wish the big channels will find some different kinds of drama, somewhere away from violence against women, something absorbing, well acted and well written, - lets hope it is soon!