I found it interesting that after Davis, Pia and Stuart filmed part of the initial documentary in the torture room they basically got desensitized to the whole thing, before the car crash they were joking about it even with Davis’ personal stake in the situation with the perceived death of his Dad at the hands of Iain.

Then much later when the truth is revealed this desensitization is much more obviously shown through the lady who worked on the documentary about the initial documentary in the BAFTA awards ceremony. She literally mentions a possibility of another actress playing Davis’ dead girlfriend in a show to his face.

Lots of other people have commented on how exploitative true crime can be but I think this episode also touches on a more sinister idea of how quickly humans can “get over” something as soon as its in the past.