If I were to murder someone I'd definitely start by using only cash to buy whatever it is I need. I would get myself a gun then plan on who'd I kill. I would not kill a family member or close friend since I would end up as a suspect and depending on who's working the case, I'd get caught. I could kill a random stranger but then I'd have to successfully get away with a kidnapping to make it easier. I could just bring a knife in my pocket or bag or something then walk around till I find a person going down a empty street or ally, pretend I'm going my own way, then stab them or shoot them without anyone seeing but it's risky and difficult. If I were to kidnap them I'd need to make sure no ones watching or around which is also difficult. I could murder someone who I'm friends with but not close to. Maybe have a best friend in on the murder. I could then invite them over and send them to the friends house. If they were killed there and they disposed of the body when the police question us we'd have an alibi of the two of us being at each other's houses making it seem like we didn't do it. Then again murder is always a difficult topic and should never be committed but when thinking about how it's done its fun to think about.
Don't commit murder guys. It's a bad idea.
but if you do, good luck. 🙂