Tonight's 20/20 (airing now) has Barbara Walters interviewing Elliot Rodger's father, Peter, talking about his son's rampage.

I'm watching mainly because the promos leading up to the airing had pull quotes where Rodger says he had no idea his son would or could do something so horrific. That doesn't seem to jive at all with the calls to police for welfare checks, and the intensive mental health therapy he tried to provide for his son. So of course, that has piqued my interest. Anyone else watching?