Yet another British mini-series based on actual events. This follows a cold case that is taken up again due to advances in DNA technology and science. The small team is run by DCI Paul Bethel, who worked on the case the first time around. I confess I was a little confused at first, not immediately realizing that we were watching DCI Bethel in both time frames, past and present. It seems that had a third murder to add to the suspect.Somehow I started out thinking there were two separate investigations, one of which was looking at just the third murder. But once I realized my error I kept up ...