The Heroine Committed Murder with Novel and Terrifying Methods, but the Police Were Suspicious but Could Not Find Any Evidence.

I want to read a book like "Hehe, if you don't obey me I'll kill you all". I want the kind of heroine who is a lunatic. Anyone who offends her or is very hateful will be found by her. She will fight wits and courage with the police who are on the side of justice. She is very smart.