@gitana1
“That, and the lack of serious girlfriends prior to this. And I have seen no evidence of close friendships outside husbands of his wife's friends".
This was the exact same situation in the Henri van Breda case. He axed to death his mother, father, brother and came within a hair’s breadth of killing his sister. The wounds were absolutely horrific as he hit all of them on the head with tremendous force multiple times.
His elder brother was studying towards his Masters degree at university, played in many team sports, had lots of friends, a very pretty girlfriend and was well-liked by everyone. Henri on the other hand had been a loner since early childhood. He decided to have a “gap” year from uni half way through the year, seemingly had no friends at all, and didn’t have a girlfriend until after he’d been charged with the murders, although she was unaware of the charges when they met. During the trial he claimed he had a girlfriend at the time of the murders but she denied this at the trial. The first officer at the scene said Henri had been emotional, but not crying. He showed no emotions after the murders, during the trial or during sentencing when he received 3 life sentences, 15 for attempted murder and 1 for obstructing the course of justice.
As
@gitana1 said, “Sort of a shadow personality, subsumed by stronger ones around him, since childhood”. This sounds like a classic case of a family annihilator, a term I’d never heard of until the Watts case.