No Alfie you are missing the point here over and over. People who display worrying behaviour in some parts of their lives .Don't always end up killing their children! They move on get their lives in some order. and people who act 'normal' during and after killing someone is a very well known train missed. going by face value or job description to judge is someone is a killer or not Just doesn't always work it is a hit and a miss. As I said, psychologists know after the even it was likely but not guaranteed that people who display certain traits will kill.
Re: the bit in bold. I didn't say that people who display worrying behaviour always go on to kill their children. You seem to be having difficulty understanding my posts. I'll try again. All the individuals you have mentioned who HAVE killed children, had PREVIOUSLY exhibited anti-social or criminal behaviour. Do either of the McCanns have a history or anti-social or criminal behaviour? Prior to Madeleine's disappearance had they been brought to the attention of social services or the police, in the way that ALL the people you have so far mentioned have been?