the really realistic assessment and lack of denial suggest to me that this wasn't the first go round with his son. comes a point no matter how much love it becomes clear to a parent that they can't control a out of control adult child. who knows what madness has been dealt with that wasn't as serious.
Well, not necessarily. In the video interview posted a few pages back, he said they were "good kids," neither of them ever got into fights, started with people, acted "macho," etc. and that nobody would have felt threatened by them or expected this from them. He did seem genuinely shocked that this all happened in all the interviews. I think he saw signs that Bryer was troubled -- the Nazi stuff, his extreme introversion, difficulties living with his mom, dropping out of school, his obsession with video games. People with mental health issues are often more able to see it in others. If anything though, I would guess that before the murder spree, he was more worried about Bryer killing himself, rather than others.
But a lot of teenagers have similar troubles and never do anything like this. I don't think all those signs coalesced into an "OMG, we missed a lot of warning signs" for him until he was forced to accept the context that his son was a killer. After that it wasn't hard to put the pieces together. Also, a lot of information came out in the media about Bryer's hidden life. According to what his family said, they had no previous idea about his homicide and suicide threats, praising Hitler since age 11, etc...I mean I guess they could be lying, which would raise its own set of questions....
Also, Bryer's dad may be very odd, but I think he's actually fairly intelligent and even self-reflective in his more cognizant moments. I also think Bryer absorbed a lot of influence from him as a child, not even on a conscious level, and I think his dad has at least some awareness of that. There's evidence to suggest, as I posted a few pages back, that the divorce aftermath wasn't just a normal messy divorce, but was really, REALLY bad and violent. I think his dad had at least some subconscious awareness of the impact that had. I don't think him writing the book was necessarily a coincidence. I think on a subconscious level, he may have realized things were going in a bad direction. All JMO.