answer:In some jurisdictions, just answering this question seriously could put a person on a watch list. Especially if such a murder were to take place. The only serious observation I would make is that most criminals – especially murderers, and especially mass murderers and serial killers, is that they are stupid and careless. The evidence and create patterns. And much of the time, the police notice these patterns and ultimately catch the bad guy. So if you’re going to be a killer, be smart about it. Which means don’t make it a crime of passion, make it a cold blooded random killing. And be very careful to not leave evidence. To your question, @ragingloli – going in ‘style’ is just asking to be caught, because it is a signature which will make you easy to identify. Bad advice.