douglas - // There are producers of real-life police reconstruction programmes, you know, the ones that have to dub on a siren every time you see a police car, who have made fortunes, mostly in the US but here too who would dispute your belief if the reported intricate planning by 'the perp' is true. //
A fair point, so allow me to refine my position -
Every single person who plans to murder someone else does so in the unshakeable belief that they are going to get away with it - so as I have pointed out, pondering the potential sentence waiting, and allowing it to stay their hand, is simply not part of the process.
I have said previously - if anyone seriously thought they would be caught and punished for committing a crime, then there would be no criminals - but they don't.