The perfect crime

At the present , there aren´t so much crime that in the past because there are new technologies that make easy to solve the crime, but also there are so much to solve because, also, the technologies and the new method make that the murderers have less fails, but exist the perfect crime. In this case HOW DO YOU DO THE PREFECT CRIME ? .

First you must  think te person who you want to kill, think the type of person , his/her costumes, where he/she usually go, with who she/he go... you have learn and know ALL of that person.
Then you have to think where will the crimen be, it is very important, it have to be a hidden and where anybody can find it. And where you can feel better.Other thing is the weapon , it have to be an object or a substance that don´t identify you , that it don´t make a piece of  evidence and it can "disapear" easly, because if there isn't weapon, there isn't crime.

In my opinion make a crime is a thing very complicate , is better that it look like an accident is the best solution.