I think calling the guy evil is harsh. He didn't take out anybody but himself and his own family. I'd like to see the text of of the notes he left just to get the understanding of where he was coming from. Its unfortunate and taking the wife and oldest son and his other children was an act of selfishness but far from "evil". The MIL probably deserved it. Get used to this type of news because over the upcoming months and years stories like this one are going to increase significantly, especially in the upper class portions society.