The first three episodes display great acting and a couple of scenes with really poignant dialogue and great (BBC) production values but in episode 4 the script just falls apart; as good as the first three episodes are , the fourth , because of the script, is inferior in equal measure. I was really disappointed and reviewed title without watching the last episode which I will do but I KNOW it can't regain its earlier footing. As others have noted , the script becomes adolescent and not because of the character's relationships but because of the ill conceived details of the plot. The Six Stars I give it are for the acting not the series overall.