Just finished this, a lot of it has been known in the UK for a while now but there's a few things which stuck out to me:
1) The levels of cope from journalist types involved with him, particularly that TV presenter who was flirting with him and now she's passing it off as an act.
2) Just how embedded he was in the institutions he corrupted. You can also see the progression from small girls school, to regular hospital, to national spinal injury unit to high security mental hospital.
3) Just how blantant he was joking about it, "My case is coming up next Thursday". He had an expertly crafted smokescreen and was obviously very good at human psychology, no wonder Prince Charles was asking him for advice!
What I also found interesting was that as he got older, the new generation reacted like he was a creep and not with laughter... there's some sort of generational difference going on with how acceptable those types of sex jokes are.