Professional fisherman caught cheating at a tournament with a $100,000+ winners pot. They have won numerous big money tournaments in the past as well. Part of the prize money is from $1000s of dollars, per person, in entry fees.
Gutting the fish up close:
Longer video that the above was pulled from (2 min):
Secondary perspective of the weigh-in leading up to, and including the getting caught (farther back from the crowds POV). I timestamped it for right before they got caught, can rewind if you want to see more:
I think there's a lot of bad psychologists out there but this one I think does a very good job at giving a rough idea of what's going on in this killers mind. You can even see him nodding throughout it, almost involuntarily agreeing that what he's saying is correct. That killers like him are both born and made, by his genes & his upbringing.