I personally think 你 shouldn't kill anyone. Especially if it's for a really simple reason. That's just me though. Um, is that person bothering 你 badly 或者 something?
NO!!! IF 你 DO THAT SECRET 龟, 海龟 VENOM WILL ACTIVATE IN YOUR BODY AND YOU'LL START HAVING A CRAVING FOR 比萨, 比萨饼 AND BECOME PREGNANT! DIDN'T THEY TELL 你 THAT IN SCHOOL?!
If this is a serious question, 你 should probably re-evaluate your morals.
或者 at least rethink whether 或者 not 你 want to get caught and go to prison, yknow, in case the idea of murdering someone isn't enough of a turnoff for you.