Watched this last night. As mentioned above already - a very harrowing watch 
Can somebody clarify though - in the first documentary, was there already a feeling / rumour that Saville was a paedophile? Like was the onus on Theroux then to try and expose that? I don’t really know enough of the backstory here and have never seen the original doc.
It seemed odd to me that Theroux was placing a bit of blame on himself for not noticing it, but was there something already known where he should have been looking for signs of Saville being a sex offender, rather than him being just plain weird?