Another interesting thing: my young adult son (20s) said to me earlier that he became aware of the PO scandal long before the TV drama (through wider social media e.g. blogs and podcasts), and he's pleased that I'm watching so much of the Inquiry.
This is a scandal that has multi-generational resonance. This kind of nightmare could happen to any one of us, or our relatives. It shows how the mundanity of mediocrity can create what are nigh on evil outcomes.