I remember this crime. It was so weird!
The documentary is not quite 'riveting,' no, but it is hard to look away.
When it began, I thought to myself There's no way in hell I'm gonna have any empathy for this lunatic, then by the middle I thought He's got a good point, but by the end I concluded What a nutjob!
That's what I mean by Hard to look away.
Give it a shot.