For those interested in a lightweight summary, Last Week Tonight did a segment on pig-butchering about a year ago. https://www.youtube.com/watch?v=pLPpl2ISKTg

The interviews with the victims are heartbreaking. There's one dad/daughter pair where the dad has lost almost literally everything, is on camera being interviewed about everything that happened, and is still flipping between "it was a total scam" and "maybe if I just send them another fee payment I can get at least some of my money back" and the daughter saying, "No, dad! It's a scam, and you are not sending them anymore money!"