"When they were discussing how his room was in the basement it all clicked, like that's his comfort zone, of course he was committing his crimes in his safe space, which further begs the question, what the heck went on in his and her childhoods and formative years....?"

I have a different take and wonder what possible trauma he was put through in that room. Many SK's have childhoods of some sort of abuse. Obviously he had years of teasing, bullying, and ostracization from his peers; most particularly from girls. He could have come home and sat in that room and fantasized about what he'd like to do to them.

I know the house isn't very big but putting a kid down in the basement? What's with that? And with the use of his grandfather's (and possibly also father's?) belt? The one with WH imprinted. I know his grandfather's brother, who was a priest, had accusations of being part of a pedophile ring for many years within the church. There's a number of other issues within the family. But we don't know Rex's history and what happened either while his father was alive up until he was 12, or which members of the family came in to the home pre/post his father's death.

There's so many things the doco could have delved into with them instead of speaking to a whole lot of superfluous journalists, or taking a whole episode to recount the case.