Those surrounded by others deaths don't think about their own.
A killer normally commits twenty errors, but is only aware of a third of them. Most of them are due to carelessness or inexperience. But there's one type of error that we can consider deliberate. It's a sort of signature. "The devil's dumbest sin is vanity". But where's the fun in being the devil if you can't let anyone else know?
At times reporters are better than cops in digging up clues, and investigation details aren't the only thing they televise.