I feel like they don’t argue as much as they should based on their sadistic behaviour in other aspects.
Like literally how do their relationships work. Do they just threaten each other when they need something?
These people in particular are especially vile and manipulative and evil. They are also sadistic and hold grudges like there’s no tomorrow.
How tf do they get along with EACH OTHER?
Why not? Some serial killers could do it for decades.
I don’t think so. From what I’ve seen they mostly didn’t have anyone close, and just fooled their neighbours (which is easy I would think)
There is plenty that had a completly unsuspecting family, wife, children and all.
I mean there are also plenty of extremely stupid people. Plus their children wouldn’t know any better. In this case it’s the wife that’s stupid, but it’s possible they just lied to avoid jail time. Maybe they had their suspicions something is wrong with their husbands.