So much of this sounds like "addict behavior". A high functioning, entitled addict with resources was doing anything he could to keep getting access to drugs and maintaining the lifestyle he loves. Addicts will do or say anything to keep getting high. They become very adept at manipulating people, scheming, stealing, etc. The drugs themselves alter their brains, thinking, emotions. Loved ones just become people to manipulate to get money for drugs. Cooking up a scheme to deal with debt and get drugs by killing your wife and son is not unusual for an addict. They lose empathy and feelings for loved ones and friends.