I was going to post his brother, while probably not involved dirrectly with the actual theft, helped launder the money.
He may not even no the details but he knew his brother was doing something illegal.
Brother Eric has said that Stephen gave him enough money for Eric to quit his job and retire early. That and his evasive speech has me convinced that Eric is up to his eyeballs in Stephen’s monetary crimes.
I tend to doubt that he had any part of the massacre. I think that’s big brother’s own sociopathic thing.