Being really quite old I can remember - I think - the days before DNA profiling.
Something has just struck me. I was just reminded of a rape and murder in pre profiling days by the death of the murderer.
What happened must have been told by him as some sort of confessional. I think he said she on Get on with it. I mean I think he was trying to say that she being a mature woman was just wanting it over with so she could get home and have her man's tea on the table, so it wasn't in a struggle to rape her that he killed her. He killed her afterwards to stop he identifying him.
That's the great mystery, the Silent Witness. There's no point killing the victim to keep her quiet if your DNA is all over her. In fact, you're better off keeping her alive and telling her to get herself cleaned up quick and not to tell anybody or you WILL kill her or get yer mates to kill her if you're arrested.
So there you go. That's my theory. The 'sex' is a side issue these days. They don't do it for the sex no more. They do it for the killing and the injury the power and domination.
So hands off sex. The anger is the thing.